Observation of the large orbital entropy in Zn-doped orbital-spin-coupled system MnV2O4

Observation of the large orbital entropy in Zn-doped orbital-spin-coupled system MnV2O4
复制标题

Zn掺杂轨道自旋耦合体系MnV2O4大轨道熵的观察

DOI:
10.1063/1.3303982
复制
发表时间:
2010-02
影响因子:
4
通讯作者:
W. H. Song
W. H. Song
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
X. Luo;Y. P. Sun;W. J. Lu;X. B. Zhu;Z. R. Yang;W. H. Song

文献摘要

参考文献

被引文献

相似文献

通过直流磁化强度和比热测量研究了尖晶石型钒酸盐Mn0.95Zn0.05V2O4的磁热效应。在亚铁磁有序温度TC= 52.5K和轨道有序温度TOO=45 K附近,磁场变化0-4 T时,Mn_(0.95)Zn_(0.05)V_2 O_4的磁熵变最大值分别达到9.6和16.5J/kg K。  在TOO附近观测到的巨MCE除了有少量自旋熵的贡献外,还可能是由于V3+轨道状态的改变而产生的轨道熵的贡献。
We present the investigation on the magnetocaloric effect (MCE) in an orbital-spin-coupled spinel vanadate Mn0.95Zn0.05V2O4 via the dc magnetization and the specific-heat measurements. The maximum values of magnetic entropy change of Mn0.95Zn0.05V2O4 reach 9.6 and 16.5 J/kg K for field change 0–4 T around ferrimagnetic ordering temperature TC=52.5 K and orbital ordering temperature TOO=45 K. Except for a small quantity of contribution of the spin entropy, the observed giant MCE around TOO may be attributed to the orbital entropy due to the change of the orbital state of V3+.
DOI: 10.1063/1.2827117
发表时间: 2008-01
影响因子: 3.2
作者:
S. Karmakar;E. Bose;S. Taran;B. Chaudhuri;C. P. Sun;Hung-Duen Yang
通讯作者: S. Karmakar;E. Bose;S. Taran;B. Chaudhuri;C. P. Sun;Hung-Duen Yang
DOI: 10.1103/physrevlett.93.157206
发表时间: 2004-01
影响因子: 8.6
作者:
O. Tchernyshyov
通讯作者: O. Tchernyshyov
DOI: 10.1016/0031-9163(64)91158-8
发表时间: 1964-01-01
期刊: PHYSICS LETTERS
影响因子: --
作者:
BANERJEE, SK
通讯作者: BANERJEE, SK
DOI: 10.1103/physrevb.78.024406
发表时间: 2008-07
期刊: Physical Review B
影响因子: 3.7
作者:
V. Hardy;Y. Bréard;C. Martin
通讯作者: V. Hardy;Y. Bréard;C. Martin
DOI: 10.1063/1.333046
发表时间: 1984-01-01
影响因子: 3.2
作者:
OESTERREICHER, H;PARKER, FT
通讯作者: PARKER, FT