Anisotropic paramagnetic response of hexagonal RMnO_3

Vassil Skumryev; Michael D. Kuzmin; Marin Gospodinov; Josep Fontcuberta

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Anisotropic paramagnetic response of hexagonal RMnO_3

机译：六角形RMnO_3的各向异性顺磁响应

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摘要

The anisotropic paramagnetic susceptibility of single crystals of the hexagonal manganites RMnO_3 (R=Ho, Er, Tm, Yb, and Lu) is studied. It is found that the anisotropy of the paramagnetic Curie temperature along the sixfold axis and in the basal plane, θ_‖-θ_⊥ is determined not by the anisotropic Mn-O-Mn interactions but rather by the quadrupolar charge distribution of the 4f shells of the rare-earth ions. These findings disclose the decisive role of the R ions in forming the paramagnetic behavior of RMnO_3 and suggest a subtle interplay between the charge-density distribution of rare-earths and the symmetry of the spin-ordering of the Mn sublattices.

机译：研究了六方锰矿RMnO_3（R = Ho，Er，Tm，Yb和Lu）单晶的各向异性顺磁化率。发现顺磁性居里温度沿六重轴和在基平面θ_′-θ_⊥的各向异性不是由各向异性的Mn-O-Mn相互作用决定的，而是由4f壳层的四极电荷分布决定的。稀土离子。这些发现揭示了R离子在形成RMnO_3的顺磁行为中的决定性作用，并暗示了稀土离子的电荷密度分布与Mn亚晶格自旋有序对称性之间的微妙相互作用。

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来源
《Physical review》 |2009年第21期|212414.1-212414.4|共4页
作者
Vassil Skumryev; Michael D. Kuzmin; Marin Gospodinov; Josep Fontcuberta;
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作者单位

Institucio Catalana de Recerca i Estudis Avancats (ICREA), and Departament de Fisica, Universitat Autdnoma de Barcelona, 08193 Bellaterra, Spain;

Leibniz-Institut fuer Festkoerper- und Werkstoffforschung, PF 270116, D-01171 Dresden, Germany;

Institute of Solid State Physics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria;

Institut de Ciencia de Materials de Barcelona, CSIC, Campus UAB, 08193 Bellaterra, Spain;

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正文语种 eng
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关键词
magnetic anisotropy; crystal-field theory and spin hamiltonians; manganites; metals and alloys;

机译：磁各向异性晶体场理论和自旋哈密顿论;锰矿;金属和合金;

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1. Critical behavior of the paramagnetic to antiferromagnetic transition in orthorhombic and hexagonal phases of RMnO_3 (R = Sm, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y) [J] . A. Oleaga, A. Salazar, D. Prabhakaran, Physical review . 2012,第18期

机译：RMnO_3的正交和六方相中顺磁性到反铁磁性转变的临界行为（R = Sm，Tb，Dy，Ho，Er，Tm，Yb，Lu，Y）
2. Rotating field entropy change in hexagonal TmMnO_3 single crystal with anisotropic paramagnetic response [J] . Jin-Ling Jin, Xiang-Qun Zhang, Heng Ge, Physical review . 2012,第21期

机译：具有各向异性顺磁响应的六角形TmMnO_3单晶的旋转场熵变化
3. Hexagonal RMnO_3: a model system for twodimensional triangular lattice antiferromagnets [J] . Hasung Sim, Joosung Oh, Jaehong Jeong, Acta Crystallographica, Section B. Structural science, crystal engineering and materials . 2016,第1期

机译：六角RMnO_3：二维三角晶格反铁磁体的模型系统
4. Ellipsometric Study of Anisotropy Permittivity of Hexagonal Manganites RmnO_3 (R - Ho, Tm, Yb) [C] . A. A. Makhnev, L. V. Nomerovannaya, N. N. Loshkareva, Moscow International Symposium on Magnetism . 2012

机译：椭型椭圆型六边形锰酸锰的各向异性介质研究RMNO_3（R - HO，TM，YB）
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Anisotropic paramagnetic response of hexagonal RMnO_3

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