Pub Date : 2015-07-16DOI: 10.1109/INTMAG.2015.7156909
S. Kawai, H. Ando, H. Sakakibara, Y. Kuroki, T. Hajiri, K. Ueda, H. Asano
In this study, we report a systematical study by changing Ts on growth of Co3FeN thin films on LSAT substrate and its magnetic properties including AMR ratio. As a result, we obtain larger absolute value of the AMR ratio than our previous report. In addition, we succeeded in measuring the spin polarization of Co3FeN by point contact Andreev reflection. Finally, we would like to discuss the relationship between AMR ratio and spin polarization.
{"title":"Magnetic and transport properties of antiperovskite nitride Co3FeN films","authors":"S. Kawai, H. Ando, H. Sakakibara, Y. Kuroki, T. Hajiri, K. Ueda, H. Asano","doi":"10.1109/INTMAG.2015.7156909","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7156909","url":null,"abstract":"In this study, we report a systematical study by changing Ts on growth of Co3FeN thin films on LSAT substrate and its magnetic properties including AMR ratio. As a result, we obtain larger absolute value of the AMR ratio than our previous report. In addition, we succeeded in measuring the spin polarization of Co3FeN by point contact Andreev reflection. Finally, we would like to discuss the relationship between AMR ratio and spin polarization.","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129489953","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}
Pub Date : 2015-07-16DOI: 10.1109/INTMAG.2015.7157204
C. Liu, C. Lin, B. Dong, P. Zhang
During geomagnetic storms, the geoelectric field drives currents in transmission grids, railway system and pipelines. These geomagnetically induced currents (GIC) threaten the safe operation of equipment. The GIC recordings show that geological structure has significant implications for GIC in power gird (Liu Chunming et al. 2009). In the region with complex geological structure, the horizontal change of earth conductivity will change the distribution of geoelectric field (Albertson & Balelen 1970). In particular, the“proximity effect” will influence the electric field in the perpendicular direction of conductivity change. If the transmission line is parallel with the interface of conductivity change, the “proximity effect” has a significant impact on GIC of power grids. Therefore, the “proximity effect” is an important case of the earth conductivity in connection with studies of geomagnetically induced currents.
{"title":"The proximity effect of earth conductivity change on geomagnetically induced current","authors":"C. Liu, C. Lin, B. Dong, P. Zhang","doi":"10.1109/INTMAG.2015.7157204","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7157204","url":null,"abstract":"During geomagnetic storms, the geoelectric field drives currents in transmission grids, railway system and pipelines. These geomagnetically induced currents (GIC) threaten the safe operation of equipment. The GIC recordings show that geological structure has significant implications for GIC in power gird (Liu Chunming et al. 2009). In the region with complex geological structure, the horizontal change of earth conductivity will change the distribution of geoelectric field (Albertson & Balelen 1970). In particular, the“proximity effect” will influence the electric field in the perpendicular direction of conductivity change. If the transmission line is parallel with the interface of conductivity change, the “proximity effect” has a significant impact on GIC of power grids. Therefore, the “proximity effect” is an important case of the earth conductivity in connection with studies of geomagnetically induced currents.","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124207004","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}
Pub Date : 2015-07-16DOI: 10.1109/INTMAG.2015.7156857
W. Zhang, H. Miu, X. Jia, Y. Li, G. Xie
Fe-based bulk metallic glasses (BMGs) are attractive for the engineering applications as functional materials because of their excellent soft magnetic properties, very high strength, viscous flow workability in the supercooled liquid region (ΔTx = Tx-Tg, Tg: glass transition temperature; Tg: crystallization temperature), and low material cost [1]. Recently, the thermoplastic processing has been expected to make highly functional micro-/nano-parts and electromechanical devices on the soft magnetic Fe-based BMGs by suing the viscous flow workability [1,2]. The suitable BMGs for thermoplastic processes have to possess simultaneously low Tg, large ΔTx, and high glass-forming ability (GFA). From a processing point of view, it is desirable to possess a large ΔTx which gives access to a low forming viscosity, which in turn facilitates thermoplastic forming. A low Tg implies a low processing temperature since it facilitates processing [2]. In addition, a low Tg can prevent the reaction of the metallic glasses with mold materials. However, most of the Fe-based BMGs with good soft magnetic properties exhibited high Tg, small ΔTx, low GFA or high viscosity in the supercooled liquid state, which hinder their thermoplastic formability. In this work, with the aim of developing new ferromagnetic Fe-based BMGs with low Tg, large ΔTx and high GFA for the thermoplastic processing, we investigated the effect of alloying additions on the thermal stability, GFA, magnetic properties of the Fe-P-C-B metallic glasses with low Tg.
{"title":"Effects of alloying elements on thermal stability, glass-forming ability and soft magnetic properties of Fe-P-C-B metallic glasses","authors":"W. Zhang, H. Miu, X. Jia, Y. Li, G. Xie","doi":"10.1109/INTMAG.2015.7156857","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7156857","url":null,"abstract":"Fe-based bulk metallic glasses (BMGs) are attractive for the engineering applications as functional materials because of their excellent soft magnetic properties, very high strength, viscous flow workability in the supercooled liquid region (ΔT<sub>x</sub> = T<sub>x</sub>-T<sub>g</sub>, T<sub>g</sub>: glass transition temperature; T<sub>g</sub>: crystallization temperature), and low material cost [1]. Recently, the thermoplastic processing has been expected to make highly functional micro-/nano-parts and electromechanical devices on the soft magnetic Fe-based BMGs by suing the viscous flow workability [1,2]. The suitable BMGs for thermoplastic processes have to possess simultaneously low T<sub>g</sub>, large ΔT<sub>x</sub>, and high glass-forming ability (GFA). From a processing point of view, it is desirable to possess a large ΔT<sub>x</sub> which gives access to a low forming viscosity, which in turn facilitates thermoplastic forming. A low T<sub>g</sub> implies a low processing temperature since it facilitates processing [2]. In addition, a low T<sub>g</sub> can prevent the reaction of the metallic glasses with mold materials. However, most of the Fe-based BMGs with good soft magnetic properties exhibited high T<sub>g</sub>, small ΔT<sub>x</sub>, low GFA or high viscosity in the supercooled liquid state, which hinder their thermoplastic formability. In this work, with the aim of developing new ferromagnetic Fe-based BMGs with low T<sub>g</sub>, large ΔT<sub>x</sub> and high GFA for the thermoplastic processing, we investigated the effect of alloying additions on the thermal stability, GFA, magnetic properties of the Fe-P-C-B metallic glasses with low T<sub>g</sub>.","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132109391","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}
Pub Date : 2015-07-16DOI: 10.1109/INTMAG.2015.7157200
Z. Xu, S. Wang, Z. Zhang, T. Chin, C. Sung
This research focuses on optimization of parameters for magnetizing patterned magnetic scale to match the application of precision control.The results are potential to fabricate a magnetized multi-pole magnetic scale with high quality magnetic field. This method leads to improve the quality and cost in designing magnetizing parameters. As a result of using the optimal solution, the Bz enhancement is achieved by a factor of 1.17x and the decrease in SD is 0.4x. The high reproducibility factor is evidenced from SD/Bz, which is 0.006x (5.6/842.7). The high quality field through the detection gap control is beneficial for signal processing. The effects of magnetization parameters will be further elaborated in details.
{"title":"Optimization of magnetizing parameters for multi-pole magnetic scales by Taguchi method","authors":"Z. Xu, S. Wang, Z. Zhang, T. Chin, C. Sung","doi":"10.1109/INTMAG.2015.7157200","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7157200","url":null,"abstract":"This research focuses on optimization of parameters for magnetizing patterned magnetic scale to match the application of precision control.The results are potential to fabricate a magnetized multi-pole magnetic scale with high quality magnetic field. This method leads to improve the quality and cost in designing magnetizing parameters. As a result of using the optimal solution, the Bz enhancement is achieved by a factor of 1.17x and the decrease in SD is 0.4x. The high reproducibility factor is evidenced from SD/Bz, which is 0.006x (5.6/842.7). The high quality field through the detection gap control is beneficial for signal processing. The effects of magnetization parameters will be further elaborated in details.","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134280725","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}
Pub Date : 2015-07-16DOI: 10.1109/INTMAG.2015.7157152
Y. Li, P. Liu, M. Vázquez
After suitable annealing, amorphous alloy with composition of FeCuNbSiB (Finemet) exhibits excellent soft magnetic properties owing to the nanocrystallization. When the amorphous alloy was annealed under application of mechanical stress, a transverse anisotropy of the order of 103 J/m3 had been found in the nanocrystalline alloy. During the annealing process, with an axially applied tensile stress, the nanocrystalline bcc Fe-Si grains (magnetostriction ls <; 0) take the form of ellipsoid with the short axis parallel to the axis of samples due to the magneto-elastic interaction in the interface of two-phases. Since the load is still applied in the process of cooling, this microstructure can be reserved in the stress-annealed samples. In this work, the stress-annealing induced anisotropy of Cr-doped Finemet nanocrystalline wires is studied, especially, an anomalous stress-dependent induced anisotropy is reported.
{"title":"Stress-annealing induced anisotropy in FeCrCuNbSiB nanocrystalline wires","authors":"Y. Li, P. Liu, M. Vázquez","doi":"10.1109/INTMAG.2015.7157152","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7157152","url":null,"abstract":"After suitable annealing, amorphous alloy with composition of FeCuNbSiB (Finemet) exhibits excellent soft magnetic properties owing to the nanocrystallization. When the amorphous alloy was annealed under application of mechanical stress, a transverse anisotropy of the order of 103 J/m3 had been found in the nanocrystalline alloy. During the annealing process, with an axially applied tensile stress, the nanocrystalline bcc Fe-Si grains (magnetostriction ls <; 0) take the form of ellipsoid with the short axis parallel to the axis of samples due to the magneto-elastic interaction in the interface of two-phases. Since the load is still applied in the process of cooling, this microstructure can be reserved in the stress-annealed samples. In this work, the stress-annealing induced anisotropy of Cr-doped Finemet nanocrystalline wires is studied, especially, an anomalous stress-dependent induced anisotropy is reported.","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131455144","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}
Pub Date : 2015-07-16DOI: 10.1109/INTMAG.2015.7156781
H. Luo, W. Xia, J. Du, J. Zhang, A. Yan, J. Liu
FePt has a potential application in high-density recording medium owing to the strong uniaxial magnetocrystalline anisotropy of its L10-ordered phase, which suppresses superparamagnetism in small particles. However, in most cases, the as-prepared samples are completely disordered A1 phase (face-centered cubic) and have no uniaxial anisotropy. The subsequent annealing for ordering is usually subjected to unexpected side effects like coalescence and grain coarsening. Much attention has thus been paid to lowering the annealing temperature or accelerating the ordering process [1-3]. In close packed structures, the migration of atoms proceeds basically with the help of vacancies. Higher vacancy concentration corresponds to faster migration of atoms. Hence, the mechanism of tuning the vacancy formation energy in disordered A1-FePt is of great importance. However, investigation on this topic is rare in the literature. In view of the existence of interface strain due to lattice mismatch in the particle thin films and variation of magnetism when raising temperature for annealing, this study is dedicated to theoretical investigation of the effect of distortion and magnetism on vacancy formation energy of A1-FePt .
{"title":"Vacancy formation energy in disordered FePt mediated by distortion and magnetism","authors":"H. Luo, W. Xia, J. Du, J. Zhang, A. Yan, J. Liu","doi":"10.1109/INTMAG.2015.7156781","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7156781","url":null,"abstract":"FePt has a potential application in high-density recording medium owing to the strong uniaxial magnetocrystalline anisotropy of its L10-ordered phase, which suppresses superparamagnetism in small particles. However, in most cases, the as-prepared samples are completely disordered A1 phase (face-centered cubic) and have no uniaxial anisotropy. The subsequent annealing for ordering is usually subjected to unexpected side effects like coalescence and grain coarsening. Much attention has thus been paid to lowering the annealing temperature or accelerating the ordering process [1-3]. In close packed structures, the migration of atoms proceeds basically with the help of vacancies. Higher vacancy concentration corresponds to faster migration of atoms. Hence, the mechanism of tuning the vacancy formation energy in disordered A1-FePt is of great importance. However, investigation on this topic is rare in the literature. In view of the existence of interface strain due to lattice mismatch in the particle thin films and variation of magnetism when raising temperature for annealing, this study is dedicated to theoretical investigation of the effect of distortion and magnetism on vacancy formation energy of A1-FePt .","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122801039","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}
Pub Date : 2015-07-16DOI: 10.1109/INTMAG.2015.7156996
S. Ham, S. Cho, T. Jeong, H. Hong, M. Park
The production of rare earth metals is concentrated in a limited number of countries, such as China. In addition, due to resource weapons policies in recently years that is soaring prices of rare earth, studies on the development of the non-rare earth motor is required. In order to maximize the power density, spoke-type PMSM(Permanent Magnet Synchronous Motor) is commonly used as a non-rare earth motor. In this paper, the method of maximizing the power density is proposed according to the winding methods through transforming the shape of the permanent magnet of the spoke type to Fan-shape. Also, by applying a fan-shape this motor reduce the core loss than general spoke-type electric motor.
{"title":"Design method for improving the power density applied to Fan-shape of non-rare earth spoke-type PMSM","authors":"S. Ham, S. Cho, T. Jeong, H. Hong, M. Park","doi":"10.1109/INTMAG.2015.7156996","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7156996","url":null,"abstract":"The production of rare earth metals is concentrated in a limited number of countries, such as China. In addition, due to resource weapons policies in recently years that is soaring prices of rare earth, studies on the development of the non-rare earth motor is required. In order to maximize the power density, spoke-type PMSM(Permanent Magnet Synchronous Motor) is commonly used as a non-rare earth motor. In this paper, the method of maximizing the power density is proposed according to the winding methods through transforming the shape of the permanent magnet of the spoke type to Fan-shape. Also, by applying a fan-shape this motor reduce the core loss than general spoke-type electric motor.","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127106335","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}
Pub Date : 2015-07-16DOI: 10.1109/INTMAG.2015.7157394
P. Zheng, Y. Sui, B. Yu, L. Cheng, W. Wang
This paper presents the design and optimization of a single-phase dual-stator flux-switching permanent magnet oscillating generator using finite element method. Based on the dual-stator structure, the power density can be improved by integrated design of the series magnetic circuit. Performance of the tubular permanent magnet linear machine under partial demagnetization is evaluated.
{"title":"A tubular single-phase dual-stator flux-switching PM oscillating generator with series magnetic circuit","authors":"P. Zheng, Y. Sui, B. Yu, L. Cheng, W. Wang","doi":"10.1109/INTMAG.2015.7157394","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7157394","url":null,"abstract":"This paper presents the design and optimization of a single-phase dual-stator flux-switching permanent magnet oscillating generator using finite element method. Based on the dual-stator structure, the power density can be improved by integrated design of the series magnetic circuit. Performance of the tubular permanent magnet linear machine under partial demagnetization is evaluated.","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"87 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127410745","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}
Pub Date : 2015-07-16DOI: 10.1109/INTMAG.2015.7157412
C. Lai, N. Kar
The concept of integrated battery charger is attracting attentions these days. To design a motor drive system with an integrated charging capability, the machine windings are usually reconfigured to be used as the AC side inductors. Along with the switches from the drive circuitry, the AC side inductors form the voltage front-end to improve the power factor while charging. Most of the research work that was conducted was focused on the circuit topologies [1], [2] and the charger performances [3]. When looking into the basis, what will happen inside the machine when AC current is flowing through the machine windings? More specifically, the interactions between the electromagnetic field produced by the AC current excitation and the rotor magnetic field can cause electromagnetic torque and variations of the effective winding inductance. In this investigation, these two aspects, the produced torque and the impedance due to different winding configurations under a single-phase integrated charging operation employing a surface-mounted permanent magnet synchronous machine (SPMSM) drive system are analyzed. Experimental tests were conducted on a 21 HP, 8-pole SPMSM to verify the results.
{"title":"Analysis of the electromagnetic torque and the effective winding inductance of a surface-mounted PMSM under integrated battery charging operation","authors":"C. Lai, N. Kar","doi":"10.1109/INTMAG.2015.7157412","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7157412","url":null,"abstract":"The concept of integrated battery charger is attracting attentions these days. To design a motor drive system with an integrated charging capability, the machine windings are usually reconfigured to be used as the AC side inductors. Along with the switches from the drive circuitry, the AC side inductors form the voltage front-end to improve the power factor while charging. Most of the research work that was conducted was focused on the circuit topologies [1], [2] and the charger performances [3]. When looking into the basis, what will happen inside the machine when AC current is flowing through the machine windings? More specifically, the interactions between the electromagnetic field produced by the AC current excitation and the rotor magnetic field can cause electromagnetic torque and variations of the effective winding inductance. In this investigation, these two aspects, the produced torque and the impedance due to different winding configurations under a single-phase integrated charging operation employing a surface-mounted permanent magnet synchronous machine (SPMSM) drive system are analyzed. Experimental tests were conducted on a 21 HP, 8-pole SPMSM to verify the results.","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116038479","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}
Pub Date : 2015-06-01DOI: 10.1109/INTMAG.2015.7157755
K. Zhu, J. Chen, Q. Fan, L. Wang, Q. Xu
There have been increasing research activities on organic spintronics, due to the long spin relaxation time in organic semiconductors which allows retaining the spin information. Generally, the widely used organic semiconductors are tris-(8, hydroxyquinoline) aluminum (Alq3), oleic acid, poly (3-hexyl thiophene)(RRP3HT), etc. Recently, the inorganic-organic perovskite family of materials taking the form ABX3 (A = CH3NH3+; B = Pb2+; and X=Cl-, I-, and/or Br) have attracted intensive research interests, due to the dramatically increasing efficiency in the hybric solar cell [1]. It has been reported that CH3NH3PbI3-xClx has very long electron-hole diffusion length (~100 nm for CH3NH3PbI3 and ~ 1 μm for CH3NH3PbI3-xClx) [1], suggesting the possible applicaton in organic spintronics. In this work, we prepared the CH3NH3PbI3 coated La0.67Sr0.33MnO3 (LSMO) granular composites, and the magnetoresistance (MR) was studied.
{"title":"Magnetoresistance of (CH3NH3)PbI3 coated La0.67Sr0.33MnO3 granular composites","authors":"K. Zhu, J. Chen, Q. Fan, L. Wang, Q. Xu","doi":"10.1109/INTMAG.2015.7157755","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7157755","url":null,"abstract":"There have been increasing research activities on organic spintronics, due to the long spin relaxation time in organic semiconductors which allows retaining the spin information. Generally, the widely used organic semiconductors are tris-(8, hydroxyquinoline) aluminum (Alq3), oleic acid, poly (3-hexyl thiophene)(RRP3HT), etc. Recently, the inorganic-organic perovskite family of materials taking the form ABX<sub>3</sub> (A = CH<sub>3</sub>NH<sub>3</sub><sup>+</sup>; B = Pb<sup>2+</sup>; and X=Cl<sup>-</sup>, I<sup>-</sup>, and/or Br) have attracted intensive research interests, due to the dramatically increasing efficiency in the hybric solar cell [1]. It has been reported that CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3-x</sub>Cl<sub>x</sub> has very long electron-hole diffusion length (~100 nm for CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> and ~ 1 μm for CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3-x</sub>Cl<sub>x</sub>) [1], suggesting the possible applicaton in organic spintronics. In this work, we prepared the CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> coated La<sub>0.67</sub>Sr<sub>0.33</sub>MnO<sub>3</sub> (LSMO) granular composites, and the magnetoresistance (MR) was studied.","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"152 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114049714","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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