反铁磁性
中子衍射
结晶学
物理
凝聚态物理
非弹性中子散射
磁化率
自旋(空气动力学)
中子
中子散射
材料科学
衍射
化学
热力学
核物理学
光学
作者
X.Y. Chen,Yanfang Gao,M. F. Liu,Tao Zou,V. Ovidiu Garlea,Clarina dela Cruz,Zhen Liu,Wenhua Niu,L. Tan,Guanzhong Zhou,Fei Liu,Shuhan Zheng,Zhen Ma,Xiuzhang Wang,Hong Li,Shuai Dong,Junming Liu
出处
期刊:Physical Review Materials
[American Physical Society]
日期:2023-09-19
卷期号:7 (9)
标识
DOI:10.1103/physrevmaterials.7.094404
摘要
We report a quasi-one-dimensional $S=1$ spin chain compound $\mathrm{BaNi}{\mathrm{Te}}_{2}{\mathrm{O}}_{7}$. This magnetic system has been investigated by magnetic susceptibility, specific heat, and neutron powder diffraction. These results indicate that $\mathrm{BaNi}{\mathrm{Te}}_{2}{\mathrm{O}}_{7}$ develops a short-range magnetic correlation around $T\ensuremath{\sim}22\phantom{\rule{0.16em}{0ex}}\mathrm{K}$. With further cooling, an antiferromagnetic phase transition is observed at ${T}_{\mathrm{N}}\ensuremath{\sim}5.4\phantom{\rule{0.16em}{0ex}}\mathrm{K}$. Neutron powder diffraction revealed antiferromagnetic noncollinear order with a commensurate propagation vector $\mathbf{k}=(1/2,1,0)$. The refined magnetic moment size of ${\mathrm{Ni}}^{2+}$ at 1.5 K is $1.84{\ensuremath{\mu}}_{\mathrm{B}}$, and its noncollinear spin texture is confirmed by first-principles calculations. Inelastic neutron-scattering results and density functional theory calculations confirmed the quasi-one-dimensional nature of the spin systems.
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