An Electron Paramagnetic Resonance Study of the Orbital Ordering Compound MgTi2O4
An Electron Paramagnetic Resonance Study of the Orbital Ordering Compound MgTi2O4
复制标题
轨道有序化合物MgTi2O4的电子顺磁共振研究
DOI:
10.1007/s00723-015-0653-8
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发表时间:
2015
影响因子:
1
通讯作者:
Shi Jing
中科院分区:
文献类型:
--
作者:
Zhu Yuanyuan;Wang Rongjuan;Wang Li;Liu Yong;Xiong Rui;Shi Jing
We report the electron paramagnetic resonance (EPR) studies of MgTi2O4in the 300–140 K range. Above the transition temperatureTt(~258 K), the EPR results indicate that MgTi2O4is paramagnetic. The parameters of the EPR spectra show an anomalous change atTt. The clear EPR lines can be observed in temperature betweenTtand 220 K. Besides that the EPR intensity,gvalue, and EPR linewidth increase with decreasing temperature; in temperature range below 220 K, no clear EPR line can be detected. The EPR spectra results demonstrate that magnetic spin-singlet state and the orbital density wave of MgTi2O4system are formed gradually with decreasing temperature at low temperature range.