Pub Date : 2024-06-14DOI: 10.1007/s10948-024-06779-6
Alaa M. Khudhair, A. Ben Ahmed
{"title":"Adsorption Characteristics of the Anticancer Drug Hydroxyurea with Armchair BN Graphene Nanoribbons Containing and Lacking Vacancy Defects: Insight via DFT Calculations","authors":"Alaa M. Khudhair, A. Ben Ahmed","doi":"10.1007/s10948-024-06779-6","DOIUrl":"https://doi.org/10.1007/s10948-024-06779-6","url":null,"abstract":"","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141342851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-14DOI: 10.1007/s10948-024-06768-9
Larisa Vedmid, Olga Fedorova, Andrey Fetisov, S. Uporov
{"title":"Effect of Low-level Doping With Strontium On Structure, Magnetism, and Electron States in SmMnO3 Manganite","authors":"Larisa Vedmid, Olga Fedorova, Andrey Fetisov, S. Uporov","doi":"10.1007/s10948-024-06768-9","DOIUrl":"https://doi.org/10.1007/s10948-024-06768-9","url":null,"abstract":"","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141343683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-12DOI: 10.1007/s10948-024-06773-y
Hatem R. Alamri, M. A. Hamad
{"title":"Verification of the Phenomenological Model’s Validity for the Conventional and Inverse Magnetocaloric Effects in Ni50Mn34In16","authors":"Hatem R. Alamri, M. A. Hamad","doi":"10.1007/s10948-024-06773-y","DOIUrl":"https://doi.org/10.1007/s10948-024-06773-y","url":null,"abstract":"","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141353701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-12DOI: 10.1007/s10948-024-06775-w
J. T. Wen, H. G. Hu, J. S. An, T. Han, J. F. Hu
{"title":"Prediction of Hard Magnetic Properties for Melt-Spun Nd2Fe14B and Nd2Fe14B/Fe3B Based on Machine Learning","authors":"J. T. Wen, H. G. Hu, J. S. An, T. Han, J. F. Hu","doi":"10.1007/s10948-024-06775-w","DOIUrl":"https://doi.org/10.1007/s10948-024-06775-w","url":null,"abstract":"","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141354336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-06DOI: 10.1007/s10948-024-06767-w
S. M. Starrynets
{"title":"The Effect of Boron on Equilibrium of Superconducting Phases in Bi-Pb-Sr-Ca-Cu-O System","authors":"S. M. Starrynets","doi":"10.1007/s10948-024-06767-w","DOIUrl":"https://doi.org/10.1007/s10948-024-06767-w","url":null,"abstract":"","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141377594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-04DOI: 10.1007/s10948-024-06772-z
Lunjia Du, Jianwen Chen, Qingqing Zhang, Zhimei Long, Chaoqun Li, Jiaqi Lai, Lan Liu, Te Hu, Yilong Ma, Bin Shao
The surface properties of ultra-thin flaky FeSiAl alloy powders with a thickness of 0.65 μm were modified through a high-temperature reduction process. The original FeSiAl alloy powders exhibited an inherent outer layer primarily composed of FeOx, SiAlxOy, and Al2O3. The reduction process involved the reduction of Fe3+ to metallic Fe through the use of H2. During the pressing process of the magnetic core, the flaky FeSiAl alloy powders naturally formed a stack structure with the (100) orientation. Following the reduction treatment, the FeSiAl magnetic core demonstrated an effective permeability as high as 624 at 100 kHz, with a total loss of 108.8 mW/cm3 under maximal applied fields of 50 mT at 100 kHz. These results reveal that high-temperature reduction treatment and reduction in the thickness of flaky FeSiAl alloy powders play the significant role in further enhancing their magnetic core properties.
{"title":"Enhancing the Magnetic Core Properties of Ultra-Thin Flaky FeSiAl Alloy Powders Through High-Temperature Reduction Treatment","authors":"Lunjia Du, Jianwen Chen, Qingqing Zhang, Zhimei Long, Chaoqun Li, Jiaqi Lai, Lan Liu, Te Hu, Yilong Ma, Bin Shao","doi":"10.1007/s10948-024-06772-z","DOIUrl":"https://doi.org/10.1007/s10948-024-06772-z","url":null,"abstract":"<p>The surface properties of ultra-thin flaky FeSiAl alloy powders with a thickness of 0.65 μm were modified through a high-temperature reduction process. The original FeSiAl alloy powders exhibited an inherent outer layer primarily composed of FeO<sub>x</sub>, SiAl<sub>x</sub>O<sub>y</sub>, and Al<sub>2</sub>O<sub>3</sub>. The reduction process involved the reduction of Fe<sup>3+</sup> to metallic Fe through the use of H<sub>2</sub>. During the pressing process of the magnetic core, the flaky FeSiAl alloy powders naturally formed a stack structure with the (100) orientation. Following the reduction treatment, the FeSiAl magnetic core demonstrated an effective permeability as high as 624 at 100 kHz, with a total loss of 108.8 mW/cm<sup>3</sup> under maximal applied fields of 50 mT at 100 kHz. These results reveal that high-temperature reduction treatment and reduction in the thickness of flaky FeSiAl alloy powders play the significant role in further enhancing their magnetic core properties.</p>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141253192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-04DOI: 10.1007/s10948-024-06770-1
R. Ghosh, A. Barik, M. R. Sahoo, S. Mishra, P. N. Vishwakarma
Herein, we report a fundamental study revealing the substantial change in magnetic and electrical properties promoted by manganese (Mn) substitution in the iron (Fe) site of double perovskite LaYFe2O6 [LaYFe2-xMnxO6; x = 0, 0.05, 0.10, and 0.15], which is prepared by the sol–gel auto-combustion method. The structural, morphological, magnetic, and electrical properties of all the samples are investigated to explore the influence of Mn in the compound. X-ray diffraction (XRD) study reveals the confirmation of phase formation with orthorhombic crystal structure having symmetries P21nm and Pbnm (small contribution). X-ray photoelectron spectroscopy (XPS) analysis corroborates the mixed valence state of Fe and Mn, while the dominancy of + 3 oxidation state can be confirmed for them. Magnetization study reveals that the transition temperature reduces drastically (~ 100 K) by the Mn substitution and approaches toward room temperature (RT). At 573 K, the maximum magnetization value enhanced up to ~ 30% by the Mn substitution. Grain boundary contribution in the electrical response is more prominent in the higher Mn content samples. The application of DC magnetic field exhibits a significant influence on the impedance spectra due to the substitution of Mn in the lattice, which corroborates the signature of magnetoelectric (ME) coupling. The presence of ME coupling is further confirmed by the direct magnetoelectric measurement. This finding along with the above RT magnetic transition could make it a feasible candidate for ME-based applications.
在此,我们报告了一项基础研究,该研究揭示了在溶胶-凝胶自燃烧法制备的双过晶石 LaYFe2O6 [LaYFe2-xMnxO6; x = 0, 0.05, 0.10, and 0.15]中,铁(Fe)位上的锰(Mn)取代促进了磁性和电性的实质性变化。研究了所有样品的结构、形态、磁性和电性,以探讨化合物中锰的影响。X 射线衍射(XRD)研究表明,确认了具有对称性 P21nm 和 Pbnm(小贡献)的正方晶体结构的相形成。X 射线光电子能谱(XPS)分析证实了铁和锰的混合价态,同时也证实了它们以 + 3 氧化态为主。磁化研究表明,锰的取代使转变温度急剧下降(约 100 K),并接近室温(RT)。在 573 K 时,由于锰的替代,最大磁化值提高了约 30%。在锰含量较高的样品中,晶界对电气响应的贡献更为突出。由于锰在晶格中的替代,直流磁场的应用对阻抗谱有显著影响,这证实了磁电(ME)耦合的特征。直接磁电测量进一步证实了 ME 耦合的存在。这一发现以及上述 RT 磁转变可使其成为基于 ME 的应用的可行候选材料。
{"title":"Tuning the Magnetic and Electrical Properties of LaYFe2O6 by Mn Substitution","authors":"R. Ghosh, A. Barik, M. R. Sahoo, S. Mishra, P. N. Vishwakarma","doi":"10.1007/s10948-024-06770-1","DOIUrl":"https://doi.org/10.1007/s10948-024-06770-1","url":null,"abstract":"<p>Herein, we report a fundamental study revealing the substantial change in magnetic and electrical properties promoted by manganese (Mn) substitution in the iron (Fe) site of double perovskite LaYFe<sub>2</sub>O<sub>6</sub> [LaYFe<sub>2-<i>x</i></sub>Mn<sub><i>x</i></sub>O<sub>6</sub>; <i>x</i> = 0, 0.05, 0.10, and 0.15], which is prepared by the sol–gel auto-combustion method. The structural, morphological, magnetic, and electrical properties of all the samples are investigated to explore the influence of Mn in the compound. X-ray diffraction (XRD) study reveals the confirmation of phase formation with orthorhombic crystal structure having symmetries P2<sub>1</sub>nm and Pbnm (small contribution). X-ray photoelectron spectroscopy (XPS) analysis corroborates the mixed valence state of Fe and Mn, while the dominancy of + 3 oxidation state can be confirmed for them. Magnetization study reveals that the transition temperature reduces drastically (~ 100 K) by the Mn substitution and approaches toward room temperature (RT). At 573 K, the maximum magnetization value enhanced up to ~ 30% by the Mn substitution. Grain boundary contribution in the electrical response is more prominent in the higher Mn content samples. The application of DC magnetic field exhibits a significant influence on the impedance spectra due to the substitution of Mn in the lattice, which corroborates the signature of magnetoelectric (ME) coupling. The presence of ME coupling is further confirmed by the direct magnetoelectric measurement. This finding along with the above RT magnetic transition could make it a feasible candidate for ME-based applications.</p>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141253247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-03DOI: 10.1007/s10948-024-06757-y
Abulizi Abulaiti, Li Jia-Wei, Chen Sen-Lin, Yang Wan-Min
In this research, a novel method to improve the particle size and content of Y2BaCuO5 (Y-211) in YBa2Cu3O7 − x (YBCO) bulks was demonstrated. The single-domain YBCO bulks (20 mm in diameter) have been fabricated employing the RE+011 TSIG technique with different heating rates during the liquid phase infiltration (LPI) stage. The various heating rates on Y-211 size and its content in the final YBCO samples has been investigated in detail. The findings suggest that the average size of the Y-211 particles in the Y-123 matrix initially decreases followed by an increase, while its volume fraction gradually decreases with increasing heating rate. Furthermore, it is observed that the levitation force and the trapped fields exhibit an initial increase followed by a subsequent decrease as the heating rate increases. Among all the samples, sample S3 (heating rate of 30 °C/h) has the best magnetic levitation force and trapped field performances at 77 K, i.e., the largest values are of 45.3 N and 0.41 T, respectively. The results suggest that, while employing the RE+011 TSIG technique for YBCO bulk fabrication, the average size and volume fraction of Y-211 particles in the final sample can be further enhanced by controlling the heating rates during the LPI stage, obviating any need for chemical refining agents.
{"title":"A Novel Method to Enhance the Content and size of Y-211 Particles in YBCO bulk Superconductors Grown by RE+011 TSIG Process","authors":"Abulizi Abulaiti, Li Jia-Wei, Chen Sen-Lin, Yang Wan-Min","doi":"10.1007/s10948-024-06757-y","DOIUrl":"https://doi.org/10.1007/s10948-024-06757-y","url":null,"abstract":"<p>In this research, a novel method to improve the particle size and content of Y<sub>2</sub>BaCuO<sub>5</sub> (Y-211) in YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7 − x</sub> (YBCO) bulks was demonstrated. The single-domain YBCO bulks (20 mm in diameter) have been fabricated employing the RE+011 TSIG technique with different heating rates during the liquid phase infiltration (LPI) stage. The various heating rates on Y-211 size and its content in the final YBCO samples has been investigated in detail. The findings suggest that the average size of the Y-211 particles in the Y-123 matrix initially decreases followed by an increase, while its volume fraction gradually decreases with increasing heating rate. Furthermore, it is observed that the levitation force and the trapped fields exhibit an initial increase followed by a subsequent decrease as the heating rate increases. Among all the samples, sample S3 (heating rate of 30 °C/h) has the best magnetic levitation force and trapped field performances at 77 K, i.e., the largest values are of 45.3 N and 0.41 T, respectively. The results suggest that, while employing the RE+011 TSIG technique for YBCO bulk fabrication, the average size and volume fraction of Y-211 particles in the final sample can be further enhanced by controlling the heating rates during the LPI stage, obviating any need for chemical refining agents.</p>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141253454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-31DOI: 10.1007/s10948-024-06762-1
K. Yu. Arutyunov, A. S. Gurskiy, E. Ph. Pozdnyakova, D. L. Shapovalov, Guang-Wei Deng, A. M. Chekushkin, M. A. Markina, M. A. Tarasov
When a non-equilibrium excitation (a non-paired electron) is injected into a superconductor, it can travel fairly large distance before forming an equilibrium Copper pair. Here, we fabricated and experimentally studied electron transport in a solid-state analogue of a two-slit optical interferometer: T-shaped normal metal electrode (copper) — dielectric tunnel layer (aluminum oxide) — superconducting fork (aluminum). If the perimeter of the interferometer loop is sufficiently small, the phase of the non-equilibrium quasiparticle wave function is preserved and can be adjusted utilizing the Aharonov-Bohm effect. The coherent contribution manifests itself as non-monotonic dependence of the tunnel current on perpendicular magnetic field.
{"title":"Normal Metal–Insulator–Superconductor Aharonov-Bohm Interferometer","authors":"K. Yu. Arutyunov, A. S. Gurskiy, E. Ph. Pozdnyakova, D. L. Shapovalov, Guang-Wei Deng, A. M. Chekushkin, M. A. Markina, M. A. Tarasov","doi":"10.1007/s10948-024-06762-1","DOIUrl":"https://doi.org/10.1007/s10948-024-06762-1","url":null,"abstract":"<p>When a non-equilibrium excitation (a non-paired electron) is injected into a superconductor, it can travel fairly large distance before forming an equilibrium Copper pair. Here, we fabricated and experimentally studied electron transport in a solid-state analogue of a two-slit optical interferometer: T-shaped normal metal electrode (copper) — dielectric tunnel layer (aluminum oxide) — superconducting fork (aluminum). If the perimeter of the interferometer loop is sufficiently small, the phase of the non-equilibrium quasiparticle wave function is preserved and can be adjusted utilizing the Aharonov-Bohm effect. The coherent contribution manifests itself as non-monotonic dependence of the tunnel current on perpendicular magnetic field.</p>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141192026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-27DOI: 10.1007/s10948-024-06766-x
Kapil Dev, Ankit Kadian, V. R. Reddy, Rohit Medwal, S. Annapoorni
Magnetic thin films with fast magnetization switching and low Gilbert damping are crucial for devices working at high frequency with low power consumption. In this work, composition-controlled high-quality Fe–Ni alloy thin films were electrodeposited on ITO/glass substrates and their magnetization switching behavior was investigated using MOKE and FMR. The phase of deposited alloy transformed from FCC to mixed BCC and FCC for high Fe content films. All the deposited alloy films display granular morphology and possess soft magnetic characteristics with low coercivity (Hc < 50 Oe). Magneto-optic Kerr effect hysteresis along with simultaneous domain imaging reveals that the alloy composition influences anisotropy, domain structure, and magnetization switching process. The alloyed films exhibited fourfold surface anisotropy. The magnetization reversal in pure Fe and Ni samples occurs through stripe-like domains, whereas band and ripple-like domains were evident for the alloyed films. Fast magnetization switching within a minimum field range of ~ 3 Oe was observed for Fe25Ni75 sample. The ferromagnetic resonance measurements revealed that the Fe25Ni75 alloy films exhibit lowest Gilbert damping (α = 0.024) compared to pure Fe and Ni films. In summary, these findings offer valuable insight for tailoring the magnetic properties of Fe–Ni alloy thin films with appropriate alloy composition.
{"title":"Magnetization Switching Dynamics of Electrodeposited Fe–Ni Thin Films","authors":"Kapil Dev, Ankit Kadian, V. R. Reddy, Rohit Medwal, S. Annapoorni","doi":"10.1007/s10948-024-06766-x","DOIUrl":"https://doi.org/10.1007/s10948-024-06766-x","url":null,"abstract":"<p>Magnetic thin films with fast magnetization switching and low Gilbert damping are crucial for devices working at high frequency with low power consumption. In this work, composition-controlled high-quality Fe–Ni alloy thin films were electrodeposited on ITO/glass substrates and their magnetization switching behavior was investigated using MOKE and FMR. The phase of deposited alloy transformed from FCC to mixed BCC and FCC for high Fe content films. All the deposited alloy films display granular morphology and possess soft magnetic characteristics with low coercivity (<i>H</i><sub>c</sub> < 50 Oe). Magneto-optic Kerr effect hysteresis along with simultaneous domain imaging reveals that the alloy composition influences anisotropy, domain structure, and magnetization switching process. The alloyed films exhibited fourfold surface anisotropy. The magnetization reversal in pure Fe and Ni samples occurs through stripe-like domains, whereas band and ripple-like domains were evident for the alloyed films. Fast magnetization switching within a minimum field range of ~ 3 Oe was observed for Fe<sub>25</sub>Ni<sub>75</sub> sample. The ferromagnetic resonance measurements revealed that the Fe<sub>25</sub>Ni<sub>75</sub> alloy films exhibit lowest Gilbert damping (<i>α</i> = 0.024) compared to pure Fe and Ni films. In summary, these findings offer valuable insight for tailoring the magnetic properties of Fe–Ni alloy thin films with appropriate alloy composition.</p>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141167042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}