Recent researches have challenged natural fibres as a suitable replacement for synthetic fibre for reinforcement in polymer composites for healthy environment. Jute reinforced polymer composites have gained momentum among the natural biofibres due to its properties and applications. This work focusses on the viscoelastic nature of Jute reinforced fibres using the Dynamic mechanical Analysis (DMA) technique. The type of thermoplastic polymer included, size, morphology, loading level and distribution of fibres all affect the performance of the Jute reinforced BSFT-PP composite prepared. The interphase adhesion properties, cross linking effects and the creep compliance of the composites fabricated are identified. The storage modulus values obtained from the DMA data are further investigated using the predicted theoretical models. The models implemented are in good agreement with the experimental data obtained.
{"title":"Estimation of viscoelastic properties of jute-reinforced BSFT-PP composites based on the predicted theoretical models","authors":"R. Jacob, Reenu Elizabeth John","doi":"10.1063/5.0061371","DOIUrl":"https://doi.org/10.1063/5.0061371","url":null,"abstract":"Recent researches have challenged natural fibres as a suitable replacement for synthetic fibre for reinforcement in polymer composites for healthy environment. Jute reinforced polymer composites have gained momentum among the natural biofibres due to its properties and applications. This work focusses on the viscoelastic nature of Jute reinforced fibres using the Dynamic mechanical Analysis (DMA) technique. The type of thermoplastic polymer included, size, morphology, loading level and distribution of fibres all affect the performance of the Jute reinforced BSFT-PP composite prepared. The interphase adhesion properties, cross linking effects and the creep compliance of the composites fabricated are identified. The storage modulus values obtained from the DMA data are further investigated using the predicted theoretical models. The models implemented are in good agreement with the experimental data obtained.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87317833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Dudhal, A. V. Raut, S. Gopale, Y. B. Jadhav, R. Parlikar, S. D. More
In the current work, we comprehensively focused upon the synthesis of NiFe2O4 nanoparticles (NFNPs) via the sol-gel auto-combustion method. Particularly in the present investigation, we deployed dextrose (C6H12O6) as an organic compound that works as a fuel in the sol-gel synthesis of NFNPs. The as-prepared samples of NFNPs were characterized for structural properties through XRD. The crystallite size (t), the lattice constant (a), unit cell volume (V), and X-ray density dX of NFNPs was determined using XRD data. Crystallite size was obtained through Debye-Scherrer’s formula indicates the nanocrystalline nature of the prepared NFNPs sample. The infrared spectroscopy (IR) was carried out for investigating the presence of phases and the function group analysis in the NFNPs. The IR has confirmed the formation of ferrite phase in dextrose assisted sol-gel synthesized NFNPs as we report the intrinsic vibrations belongs to the tetrahedral and octahedral sites.
{"title":"X-ray diffraction and infrared characterization of NiFe2O4 nanoparticles (NFNPs) prepared using dextrose assisted sol-gel auto-combustion technique","authors":"R. Dudhal, A. V. Raut, S. Gopale, Y. B. Jadhav, R. Parlikar, S. D. More","doi":"10.1063/5.0061080","DOIUrl":"https://doi.org/10.1063/5.0061080","url":null,"abstract":"In the current work, we comprehensively focused upon the synthesis of NiFe2O4 nanoparticles (NFNPs) via the sol-gel auto-combustion method. Particularly in the present investigation, we deployed dextrose (C6H12O6) as an organic compound that works as a fuel in the sol-gel synthesis of NFNPs. The as-prepared samples of NFNPs were characterized for structural properties through XRD. The crystallite size (t), the lattice constant (a), unit cell volume (V), and X-ray density dX of NFNPs was determined using XRD data. Crystallite size was obtained through Debye-Scherrer’s formula indicates the nanocrystalline nature of the prepared NFNPs sample. The infrared spectroscopy (IR) was carried out for investigating the presence of phases and the function group analysis in the NFNPs. The IR has confirmed the formation of ferrite phase in dextrose assisted sol-gel synthesized NFNPs as we report the intrinsic vibrations belongs to the tetrahedral and octahedral sites.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"166 5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86766500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Kulkarni, A. V. Raut, M. V. Khedkar, D. Andhare, S. Patade, K. M. Jadhav
In this paper, we report the green synthesis of NiFe2O4 NPs and their structural and magnetic properties. NiFe2O4 NPs were synthesized by sol-gel auto-combustion techniques using a green synthesis approach. A biogenic fuel clove is used in the synthesis of NiFe2O4 NPs to avoid the evolution of toxic gases. The prepared nanoparticles were characterized by the X-ray diffraction technique at room temperature. The XRD pattern was analyzed by powder-X software and the results suggested that the obtained nanoparticles belong to the single-phase cubic spinel structure. Using the values of interplanar spacing d, and Miller indices (hkl), the lattice constant (a) was calculated which matches closely with the reported literature. The magnetic properties like saturation magnetization (MS), coercivity (HC), etc. were studied from the M-H hysteresis curve recorded at room temperature using the pulse-field hysteresis loop technique. The structural and magnetic data is compared with the data obtained from other fuel assisted sol-gel synthesis of NiFe2O4 NPs.
{"title":"Structural and magnetic properties of NiFe2O4 NPs using clove assisted green synthesis technique","authors":"G. Kulkarni, A. V. Raut, M. V. Khedkar, D. Andhare, S. Patade, K. M. Jadhav","doi":"10.1063/5.0061410","DOIUrl":"https://doi.org/10.1063/5.0061410","url":null,"abstract":"In this paper, we report the green synthesis of NiFe2O4 NPs and their structural and magnetic properties. NiFe2O4 NPs were synthesized by sol-gel auto-combustion techniques using a green synthesis approach. A biogenic fuel clove is used in the synthesis of NiFe2O4 NPs to avoid the evolution of toxic gases. The prepared nanoparticles were characterized by the X-ray diffraction technique at room temperature. The XRD pattern was analyzed by powder-X software and the results suggested that the obtained nanoparticles belong to the single-phase cubic spinel structure. Using the values of interplanar spacing d, and Miller indices (hkl), the lattice constant (a) was calculated which matches closely with the reported literature. The magnetic properties like saturation magnetization (MS), coercivity (HC), etc. were studied from the M-H hysteresis curve recorded at room temperature using the pulse-field hysteresis loop technique. The structural and magnetic data is compared with the data obtained from other fuel assisted sol-gel synthesis of NiFe2O4 NPs.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86481306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. S. Patil, A. Patil, D. P. Nandagawali, A. V. Raut, D. R. Shengule
In this investigation, we aimed to synthesize Ni0.7Zn0.3Fe2O4 added with 0.4wt%V2O5 by ceramic technique and the structural magnetic and dielectric properties are determined by various characterization techniques. The phase impurity over the addition of V2O5 was identified by X-ray diffraction technique. The functional group analysis by locating the absorption bands and confirmation of formation of phase was examined by infrared spectroscopy. XRD pattern reveals that all the samples have single-phase cubic spinel structure. The lattice constant (a) and x-ray density (dx) were calculated from the XRD data. Magnetic properties of Ni0.7Zn0.3Fe2O4+0.4wt%V2O5 were carried out by pulse field hysteresis loop measurement technique. We report an increase in the Saturation magnetization (Ms), Remanence magnetization (Mr) and magneton number (nB) of Ni0.7Zn0.3Fe2O4+0.4wt%V2O5 as a cause of V2O5 addition. Whereas, the value of coercivity (Hc) was drastically decreased suggesting the changed magnetic parameters. This investigation focused on the characteristic effect of additive 0.4wt%V2O5 on physical properties of Ni0.7Zn0.3Fe2O4 ferrite.
{"title":"Structural, infrared and magnetic properties of Ni0.7Zn0.3Fe2O4+0.4wt%V2O5 synthesized using ceramic method","authors":"M. S. Patil, A. Patil, D. P. Nandagawali, A. V. Raut, D. R. Shengule","doi":"10.1063/5.0061106","DOIUrl":"https://doi.org/10.1063/5.0061106","url":null,"abstract":"In this investigation, we aimed to synthesize Ni0.7Zn0.3Fe2O4 added with 0.4wt%V2O5 by ceramic technique and the structural magnetic and dielectric properties are determined by various characterization techniques. The phase impurity over the addition of V2O5 was identified by X-ray diffraction technique. The functional group analysis by locating the absorption bands and confirmation of formation of phase was examined by infrared spectroscopy. XRD pattern reveals that all the samples have single-phase cubic spinel structure. The lattice constant (a) and x-ray density (dx) were calculated from the XRD data. Magnetic properties of Ni0.7Zn0.3Fe2O4+0.4wt%V2O5 were carried out by pulse field hysteresis loop measurement technique. We report an increase in the Saturation magnetization (Ms), Remanence magnetization (Mr) and magneton number (nB) of Ni0.7Zn0.3Fe2O4+0.4wt%V2O5 as a cause of V2O5 addition. Whereas, the value of coercivity (Hc) was drastically decreased suggesting the changed magnetic parameters. This investigation focused on the characteristic effect of additive 0.4wt%V2O5 on physical properties of Ni0.7Zn0.3Fe2O4 ferrite.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75663808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the present work, Polypropylene/Glass fiber/ethylene propylene diene rubber (PP/GF/EPDM) ternary composites were developed for orthotic applications. A series of PP/GF and PP/GF/EPDM composites with varied amount of GF and EPDM were fabricated through melt-blending process in a twin screw extruder. Maleic anhydride grafted PP (PP-g-MAH) was used as compatibilizer. The composites were characterized for its morphology through scanning electron microscopy (SEM). Mechanical properties of the composites were investigated as per ASTM standards and were compared with the costly commercial orthotic materials available in the market. The drawback of using GF as reinforcement fibers is the significant loss of impact and thermoforming properties of the composites. Incorporation of EPDM as elastomer is a promising approach to improve both impact and elongation of PP/GF composites. However, EPDM results in simultaneous decrease in the tensile strength and modulus properties. Thus, the proportion of GFs and EPDM were optimized in the composites to obtain an orthotic material with appropriate tensile and flexural properties for longer durability, high impact for its resistance to fracture and a limiting elongation at break for easy processing through thermoforming. The developed PP/GF/EPDM composites with balanced tensile and impact properties shows potential application as low cost orthotic material.
{"title":"Polypropylene/glass fiber/ethylene propylene diene ternary composites with improved thermoforming properties for orthotic aids","authors":"Sonu Raghvan, Prachi Singhal, R. Diwan, S. Rattan","doi":"10.1063/5.0063648","DOIUrl":"https://doi.org/10.1063/5.0063648","url":null,"abstract":"In the present work, Polypropylene/Glass fiber/ethylene propylene diene rubber (PP/GF/EPDM) ternary composites were developed for orthotic applications. A series of PP/GF and PP/GF/EPDM composites with varied amount of GF and EPDM were fabricated through melt-blending process in a twin screw extruder. Maleic anhydride grafted PP (PP-g-MAH) was used as compatibilizer. The composites were characterized for its morphology through scanning electron microscopy (SEM). Mechanical properties of the composites were investigated as per ASTM standards and were compared with the costly commercial orthotic materials available in the market. The drawback of using GF as reinforcement fibers is the significant loss of impact and thermoforming properties of the composites. Incorporation of EPDM as elastomer is a promising approach to improve both impact and elongation of PP/GF composites. However, EPDM results in simultaneous decrease in the tensile strength and modulus properties. Thus, the proportion of GFs and EPDM were optimized in the composites to obtain an orthotic material with appropriate tensile and flexural properties for longer durability, high impact for its resistance to fracture and a limiting elongation at break for easy processing through thermoforming. The developed PP/GF/EPDM composites with balanced tensile and impact properties shows potential application as low cost orthotic material.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74066874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study aims to establish the relation between mechanical and tribological properties of nitrided and TiCrN coated YXR-7 tool steel. Nanoindentation and scratch tests were conducted to evaluate the mechanical properties of the substrate. Hardness of the tempered tool steel was enhanced by 20.31% and 167.48% after nitriding and TiCrN coating respectively due to lower crystalline grain size (0.0144 µm) of the coating than the tempered (2.61 µm) and nitrided (1.89 µm) substrate. Elemental diffusion (Fe, Cr, W) from the substrate to coating also facilitates improved mechanical properties. Strain hardening index (n) obtained for tempered, nitrided and coated tool steel was 0.1, 0.2 and 0.3 respectively indicating lower pile-up in the TiCrN coating during nanoindentation. Coated surface exhibited lower depth and narrow scratch track compared to the nitrided surface attributed to high scratch hardness.
{"title":"Relation between mechanical and tribological properties of plasma nitrided and TiCrN coated YXR-7 tool steel","authors":"Sunil Kumar, S. Maity, Lokeswar Patnaik","doi":"10.1063/5.0061159","DOIUrl":"https://doi.org/10.1063/5.0061159","url":null,"abstract":"This study aims to establish the relation between mechanical and tribological properties of nitrided and TiCrN coated YXR-7 tool steel. Nanoindentation and scratch tests were conducted to evaluate the mechanical properties of the substrate. Hardness of the tempered tool steel was enhanced by 20.31% and 167.48% after nitriding and TiCrN coating respectively due to lower crystalline grain size (0.0144 µm) of the coating than the tempered (2.61 µm) and nitrided (1.89 µm) substrate. Elemental diffusion (Fe, Cr, W) from the substrate to coating also facilitates improved mechanical properties. Strain hardening index (n) obtained for tempered, nitrided and coated tool steel was 0.1, 0.2 and 0.3 respectively indicating lower pile-up in the TiCrN coating during nanoindentation. Coated surface exhibited lower depth and narrow scratch track compared to the nitrided surface attributed to high scratch hardness.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72787327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Orthorhombic good quality single crystals of calcium iodate were obtained by single diffusion gel technique. Optimum conditions were established for the growth of good quality single crystals. The powder X ray diffraction analysis confirms its crystalline nature and structure. The Fourier transform infrared (FT-IR) spectroscopic study indicates the presence of water molecules and iodate ligands. The optical band gap of grown crystal was evaluated from the UV visible spectral analysis. The grown crystals were concerned in an antibacterial activity against certain potentially bullying microbes such as Escherichia coli, Pseudomonas aeruginosa Staphylococcus aureus and Streptococcus mutans. The strong iodine rich oxidizing property of metal iodates make them in the formulation of biocidal energetic materials
{"title":"Growth and characterization of gel grown single crystals of calcium iodate","authors":"M. Jasmin, Simi Sugathan, P. Manoj","doi":"10.1063/5.0061285","DOIUrl":"https://doi.org/10.1063/5.0061285","url":null,"abstract":"Orthorhombic good quality single crystals of calcium iodate were obtained by single diffusion gel technique. Optimum conditions were established for the growth of good quality single crystals. The powder X ray diffraction analysis confirms its crystalline nature and structure. The Fourier transform infrared (FT-IR) spectroscopic study indicates the presence of water molecules and iodate ligands. The optical band gap of grown crystal was evaluated from the UV visible spectral analysis. The grown crystals were concerned in an antibacterial activity against certain potentially bullying microbes such as Escherichia coli, Pseudomonas aeruginosa Staphylococcus aureus and Streptococcus mutans. The strong iodine rich oxidizing property of metal iodates make them in the formulation of biocidal energetic materials","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"252 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73488928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Surface sensitive Aurivillius materials are investigated in present work for tailorable IR-activity, carbon contamination and supplemented uv-vis absorption besides having broad PTC signature. Introduction of tantalum onto niobium sites strengthens octahedron rigidity and checks oxygen leaving unit cell positions to occupy surface interstitials. High solid solubility between tantalum and niobium oxide compounds permits systematically increasing unit cell volume. Optical and electrical energy bandgaps are investigated on doping tantalum besides tailoring IR-activity of unit cell. Equal doped sample with x=1.0 offers broadened PTC region by nearly 400% compared to other samples. Energy states are estimated to overlap in diffused manner on doping tantalum to increase amount of uv-vis spectrum absorption in x=1.0 material. Differential thermal analysis (DTA) was used to confirm diffused phase transition behavior with release in lattice strain on doping tantalum in SrBi1.98La0.02Nb1-xTaxO9 (SBLNT) materials.
{"title":"Broadening of PTC signature with augmented UV-VIS optical absorption in carbophobic SrBi1.98La0.02Nb-TaO9 material","authors":"Meenakshi Kashyap, Vaibhav Shrivastava, R. Mishra","doi":"10.1063/5.0060962","DOIUrl":"https://doi.org/10.1063/5.0060962","url":null,"abstract":"Surface sensitive Aurivillius materials are investigated in present work for tailorable IR-activity, carbon contamination and supplemented uv-vis absorption besides having broad PTC signature. Introduction of tantalum onto niobium sites strengthens octahedron rigidity and checks oxygen leaving unit cell positions to occupy surface interstitials. High solid solubility between tantalum and niobium oxide compounds permits systematically increasing unit cell volume. Optical and electrical energy bandgaps are investigated on doping tantalum besides tailoring IR-activity of unit cell. Equal doped sample with x=1.0 offers broadened PTC region by nearly 400% compared to other samples. Energy states are estimated to overlap in diffused manner on doping tantalum to increase amount of uv-vis spectrum absorption in x=1.0 material. Differential thermal analysis (DTA) was used to confirm diffused phase transition behavior with release in lattice strain on doping tantalum in SrBi1.98La0.02Nb1-xTaxO9 (SBLNT) materials.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74482719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The square wells filled with nematic liquid crystals are known to possess the well-ordered reconstruction solutions for wells of size below a threshold value which is typical of sub-micron scale. These solutions are uniquely stable nematic solutions which are characterized by defect lines along the diagonal intersecting at the centre of the square domain. In this paper, we consider a square well system filled with a stable suspension of magnetic nanoparticles in nematic liquid crystals, which is referred to as the ferromagnetic nematic liquid crystals in literature. We investigate the effect of magnetic nano-inclusion on well ordered reconstruction solution of nematic-filled square wells. We numerically compute the stable nematic and magnetization profiles in the Landau-de Gennes framework and obtain spatial inhomogeneities in the profiles as a result of the interplay of material frustration due to confinement and the ferronematic coupling between the nematic medium and magnetic nanoparticles. Our most significant results pertain to the deviation of the nematic patterns from the well ordered solutions domain for large ferronematic coupling and the tailoring of the size of the defect core in the magnetization profiles with the interplay of model parameters.
{"title":"Well-ordered reconstruction solutions of ferromagnetic nematic liquid crystals in two-dimensional square wells","authors":"Konark Bisht","doi":"10.1063/5.0060995","DOIUrl":"https://doi.org/10.1063/5.0060995","url":null,"abstract":"The square wells filled with nematic liquid crystals are known to possess the well-ordered reconstruction solutions for wells of size below a threshold value which is typical of sub-micron scale. These solutions are uniquely stable nematic solutions which are characterized by defect lines along the diagonal intersecting at the centre of the square domain. In this paper, we consider a square well system filled with a stable suspension of magnetic nanoparticles in nematic liquid crystals, which is referred to as the ferromagnetic nematic liquid crystals in literature. We investigate the effect of magnetic nano-inclusion on well ordered reconstruction solution of nematic-filled square wells. We numerically compute the stable nematic and magnetization profiles in the Landau-de Gennes framework and obtain spatial inhomogeneities in the profiles as a result of the interplay of material frustration due to confinement and the ferronematic coupling between the nematic medium and magnetic nanoparticles. Our most significant results pertain to the deviation of the nematic patterns from the well ordered solutions domain for large ferronematic coupling and the tailoring of the size of the defect core in the magnetization profiles with the interplay of model parameters.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72984558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analysis of structural and dielectric behaviour of La1.95Y0.05NiMnO6 and La1.9Y0.05Sm0.05NiMnO6 double perovskites","authors":"N. Bajpai, M. Saleem, Anshuman Mishra","doi":"10.1063/5.0062432","DOIUrl":"https://doi.org/10.1063/5.0062432","url":null,"abstract":"","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73272044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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