Magnetization, resistivity, specific heat and ab initio calculations of Gd5Sb3
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Magnetization, resistivity, specific heat and ab initio calculations of Gd5Sb3
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| Автор |
Samatham, S. S.
Patel, A. K. Lukoyanov, A. V. Suresh, K. G. |
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| Тематика |
ANTIFERROMAGNETISM
GD5SB3 MAGNETIC PHASE TRANSITIONS ANTIFERROMAGNETISM ANTIMONY COMPOUNDS FREQUENCY MODULATION GADOLINIUM COMPOUNDS PHASE DIAGRAMS QUANTUM THEORY SPECIFIC HEAT TEMPERATURE AB INITIO CALCULATIONS CURIE-WEISS TEMPERATURE ELECTRONIC CORRELATION GD5SB3 MAGNETIC PHASE TRANSITIONS QUANTUM CRITICAL POINTS SPIN ORIENTATION TRANSITION STRONG ELECTRON CORRELATIONS CALCULATIONS AB INITIO CALCULATION ARTICLE HEAT HIGH TEMPERATURE LOW TEMPERATURE MAGNETIC FIELD |
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| Описание |
We report on the combined results of the structural, magnetic, transport and calorimetric properties of Mn5Si3-type hexagonal Gd5Sb3, together with ab initio calculations. It exhibits a ferromagnetic (FM)-like transition at 265 K, antiferromagnetic (AFM) Néel transition at 95.5 K followed by a spin-orientation transition at 62 K. The system is found to be in AFM state down to 2 K in a field of 70 kOe. The FM-AFM phase coexistence is not noticeable despite large positive Curie-Weiss temperature ( K). Instead, low-temperature AFM and high-temperature FM-like phases are separated in large temperatures. Temperature-magnetic field (H-T) phase diagram reveals field-driven complex magnetic phases. Within the AFM phase, the system is observed to undergo field-driven spin-orientation transitions. Field-induced tricritical and quantum critical points appear to be absent due to the strong AFM nature and by the intervention of FM-like state between paramagnetic and AFM states, respectively. The metallic behavior of the compound is inferred from resistivity along with large Sommerfeld parameter. However, no sign of strong electron-correlations is reasoned from the Kadowaki-Wood's ratio cm • (mol • K)2(mJ)-2, despite heavy γ. Essentially, ab initio calculations accounting for electronic correlations confirm AFM nature of low-temperature magnetic state in Gd5Sb3 and attainable FM ordering in agreement with experimental data. © 2018 IOP Publishing Ltd.
University Grants Commission, UGC; Russian Foundation for Basic Research, RFBR: 16-52-48012; Indian Institute of Technology Bombay, IITB The authors SSS, AKP and KGS acknowledge IRCC and Department of Physics for the magnetization, specific heat and resistivity facilities. AKP thanks University Grants Commission (UGC)-India for the financial support through Junior Research Fellowship. SSS thanks Indian Institute of Technology Bombay for the support to carry out this work through Institute Post Doctoral Fellowship program. AVL acknowledges Russian Foundation for Basic Research (Project No. 16-52-48012) for supporting this work in part. |
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| Дата |
2024-04-17T17:43:38Z
2024-04-17T17:43:38Z 2018 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) info:eu-repo/semantics/submittedVersion |
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| Идентификатор |
Samatham, S. S., Patel, A. K., Lukoyanov, A. V., & Suresh, K. G. (2018). Magnetization, resistivity, specific heat and ab initio calculations of Gd5Sb3. Journal of Physics Condensed Matter, 30(29), [295802]. https://doi.org/10.1088/1361-648X/aacb19
0953-8984 Final All Open Access, Green https://arxiv.org/pdf/1711.03263 http://elar.urfu.ru/handle/10995/132193 35733050 10.1088/1361-648X/aacb19 85049387229 000436551100001 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
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| Формат |
application/pdf
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| Издатель |
Institute of Physics Publishing
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| Источник |
Journal of Physics: Condensed Matter
Journal of Physics Condensed Matter |
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