Spatially anisotropic S = 1 square-lattice antiferromagnet with single-ion anisotropy realized in a Ni(II) pyrazine- n , n ' -dioxide coordination polymer
Spatially anisotropic S = 1 square-lattice antiferromagnet with single-ion anisotropy realized in a Ni(II) pyrazine- n , n ' -dioxide coordination polymer
复制标题
在 Ni(II) 吡嗪-n,n-二氧化物配位聚合物中实现具有单离子各向异性的空间各向异性 S = 1 方晶格反铁磁体
DOI：
10.1103/physrevb.108.094425
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发表时间：
2023
影响因子：
3.7
通讯作者：
Manson J
中科院分区：
文献类型：
--
作者：
Manson J
该配位聚合物为空间各向异性正方晶格，具有易轴单离子各向异性。这一结论是基于一致考虑的实验探针x射线衍射，磁化率，磁场依赖的热容量，μ子自旋弛豫，中子衍射，中子光谱，和脉冲场磁化。长程反铁磁（AFM）秩序的发展。虽然样品是多晶的，但在100 °处存在可观察到的自旋翻转转变和磁化饱和。线性自旋波理论产生空间各向异性交流内的AFM正方形晶格，，和易轴单离子各向异性（重整化后）。交换的各向异性得到密度泛函理论的支持。
Thecoordination polymer is found to be anspatially anisotropic square lattice with easy-axis single-ion anisotropy. This conclusion is based upon considering in concert the experimental probes x-ray diffraction, magnetic susceptibility, magnetic-field-dependent heat capacity, muon-spin relaxation, neutron diffraction, neutron spectroscopy, and pulsed-field magnetization. Long-range antiferromagnetic (AFM) order develops at. Although the samples are polycrystalline, there is an observable spin-flop transition and saturation of the magnetization at. Linear spin-wave theory yields spatially anisotropic exchanges within an AFM square lattice,,, and an easy-axis single-ion anisotropy(after renormalization). The anisotropy of the exchanges is supported by density functional theory.