تقرير
Magnetic and structural properties of Ni-substituted magnetoelectric Co$_4$Nb$_2$O$_9$
| العنوان: | Magnetic and structural properties of Ni-substituted magnetoelectric Co$_4$Nb$_2$O$_9$ |
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| المؤلفون: | Papi, Hadi, Favre, Virgile Yves, Ahmadvand, Hossein, Alaei, Mojtaba, Khondabi, Mohammad, Sheptyakov, Denis, Keller, Lukas, Kameli, Parviz, Zivkovic, Ivica, Rønnow, Henrik M. |
| المصدر: | Phys.Rev. B 100, 2019, 134408 |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | The magnetic and structural properties of polycrystalline Co$_{4-x}$ Ni$_x$ Nb$_2$ O$_9$ (x=1,2) have been investigated by neutron powder diffraction, magnetization and heat capacity measurements, and density functional theory (DFT) calculations. For x=1, the compound crystallizes in the trigonal P$\bar{3}$c1 space group. Below T$_N$ = 31 K it develops a weakly non-collinear antiferromagnetig structure with magnetic moments in the ab-plane. The compound with x=2 has crystal structure of the orthorhombic Pbcn space group and shows a hard ferrimagnetic behavior below T$_C$ =47 K. For this compound a weakly non-collinear ferrimagnetic structure with two possible configurations in ab plane was derived from ND study. By calculating magnetic anisotropy energy via DFT, the ground-state magnetic configuration was determined for this compound. The heat capacity study in magnetic fields up to 140 kOe provide further information on the magnetic structure of the compounds. Comment: Published in Physical Review B, 8 pages, 8 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.100.134408 |
| URL الوصول: | http://arxiv.org/abs/2010.12285 |
| رقم الأكسشن: | edsarx.2010.12285 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.100.134408 |
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