標題: Noncollinear ferrimagnetic ground state in Ni(NO3)(2)
作者: Volkova, O. S.
Mazurenko, V. V.
Solovyev, I. V.
Deeva, E. B.
Morozov, I. V.
Lin, J. -Y.
Wen, C. K.
Chen, J. M.
Abdel-Hafiez, M.
Vasiliev, A. N.
物理研究所
Institute of Physics
公開日期: 10-Oct-2014
摘要: Both spin-liquid and magnetically ordered phases of both half-integer and integer low-spin quantum magnets are of interest, since the magnetic structures found in the latter case usually have no classical counterparts. Such a magnetic structure was found in a combined experimental and theoretical study of the integer spin system Ni(NO3)(2). Our thermodynamic measurements have revealed a magnetically ordered phase with small spontaneous magnetization at T-C = 5.5 K. The magnetization saturation of about 2 mu(B) at low temperatures corresponds to the high-spin state (S = 1) of Ni2+ ions evidenced in L-2,L-3 edges in x-ray absorption spectroscopy spectra. We show that a consistent description of the available data is possible within a noncollinear umbrella-type ferrimagnetic ground state model for which both intra-and interlayer magnetic interactions should be antiferromagnetic. Such a scenario is suggested by the first-principles and model calculations.
URI: http://dx.doi.org/10.1103/PhysRevB.90.134407
http://hdl.handle.net/11536/123969
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.90.134407
期刊: PHYSICAL REVIEW B
Volume: 90
Issue: 13
起始頁: 0
結束頁: 0
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