Zigzag magnetic order in a novel tellurate compound Na_(4-δ)NiTeO_6 with S=1 chains

作     者：Cheng Su Xu-Tao Zeng Yi Li Nvsen Ma Zhengwang Lin Chuandi Zhang Chin-Wei Wang Ziyu Chen Xingye Lu Wei Li Xian-Lei Sheng Wentao Jin 

作者机构：School of PhysicsBeihang UniversityBeijing 100191China Center for Advanced Quantum Studies and Department of PhysicsBeijing Normal UniversityBeijing 100875China Australian Nuclear Science and Technology OrganisationLucas Heights NSW 2234Australia CAS Key Laboratory of Theoretical PhysicsInstitute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2022年第65卷第9期

页      面：128-137页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12074023,12004020,11834014,11974036,and12074024) Fundamental Research Funds for the Central Universities in China 

主　　题：zigzag magnetic order spin chain neutron diffraction first-principles calculations 

摘      要：Na_(4-δ)Ni Te O_(6) is a rare example in the transition-metal tellurate family of realizing an S=1 spin-chain *** performing neutron powder diffraction measurements,the ground-state magnetic structure of Na_(4-δ)Ni Te O_(6) is *** measurements reveal that below T_N~6.8(2)K,the Ni^(2+) moments form a screwed ferromagnetic(FM)spin-chain structure running along the crystallographic a axis but these FM spin chains are coupled antiferromagnetically along the b and c directions,giving rise to a magnetic propagation vector of k=(0,1/2,1/2).This zigzag magnetic order is well supported by first-principles *** moment size of Ni^(2+) spins is determined to be 2.1(1) μ_(B) at 3 K,suggesting a significant quenching of the orbital moment due to the crystalline electric field(CEF)*** previously reported metamagnetic transition near H_(c)~0.1 T can be understood as a field-induced spin-flip *** relatively easy tunability of the dimensionality of its magnetism by external parameters makes Na_(4-δ)Ni Te O_(6)a promising candidate for further exploring various types of novel spin-chain physics.