Abstract
We investigate the evolution of magnetic properties as well as the content and distribution of Mn for Mn(Sb1-xBix)2Te4 single crystals grown by large-temperature-gradient chemical vapor transport method.It is found that the ferromagnetic MnSb2Te4 changes to antiferromagnetism with Bi doping when x ≥ 0.25.Further analysis implies that the occupations of Mn ions at Sb/Bi site Mnsb/Bi and Mn site MnMn have a strong influence on the magnetic ground states of these systems.With the decrease of MnMn and increase of MnSb/Bi,the system will favor the ferromagnetic ground state.In addition,the rapid decrease of TC/N with increasing Bi content when x ≤ 0.25 and the insensitivity of TN to x when x ≥ 0.25 suggest that the main magnetic interaction may change from the Ruderman-Kittel-Kasuya-Yosida type at low Bi doping region to the van-Vleck type in high Bi doped samples.
基金项目
北京市自然科学基金(Z200005)
国家重点研发计划(2022YFA1403800)
国家重点研发计划(2023YFA1406500)
国家自然科学基金(12274459)
Collaborative Research Project of Laboratory for Materials and Structures,Institute of Innovative Research,Tokyo Institute of Te()
NETL
NSTL
万方数据