Cr- and Mo-Doping Effects on Structural and Orbital Order Phase Transition in Spinel-Type MnV2O4
Cr- and Mo-Doping Effects on Structural and Orbital Order Phase Transition in Spinel-Type MnV2O4
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Cr 和 Mo 掺杂对尖晶石型 MnV2O4 结构和轨道有序相变的影响
DOI：
10.1143/jpsjs.81sb.sb030
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Kazuhiro Hemmi
中科院分区：
文献类型：
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作者：
A. Furukawa and H. Tanaka;Kazuhiro Hemmi
从几何受挫系统中的自旋和轨道顺序的角度研究了尖晶石型钒氧化物。我们研究了无轨道自由度的Cr3+(3d3)和Mo3+(4d3)对MnV2O4 V3+(3d2)位点的掺杂效应，以阐明Cr和Mo掺杂样品的结构、输运和光学性质。 Cr 和 Mo 掺杂抑制轨道有序，电子结构取决于掺杂元素。输运和光学结果表明，电子在 Cr 掺杂系统中局域化，而在 Mo 掺杂系统中几乎呈流动状态。
Spinel-type vanadium oxides have been studied from the viewpoints of spin and orbital order in a geometrically frustrated system. We have investigated the doping effects of Cr3+(3d3) and Mo3+(4d3), which have no orbital degrees of freedom, to the V3+(3d2) site of MnV2O4, in order to clarify the structural, transport and optical properties of Cr- and Mo-doped samples. The orbital order is suppressed by Cr and Mo doping and the electronic structure depends on the doped elements. The results of transport and optics indicate that electrons are localized in the Cr-doped system, while they become nearly itinerant in the Mo-doped one.
几何受挫钒尖晶石中的轨道和磁转变：有效自旋-轨道-晶格耦合模型的蒙特卡罗研究
DOI：
--
发表时间：
2004
期刊：
Phys. Rev. B 70
影响因子：
--
作者：
Y.Motome;H.Tsunetsugu
通讯作者：
H.Tsunetsugu