Synthesis, crystal structure, and magnetic properties of Ni2CrBO5

被引:3
作者
Belskaya, N. A. [1 ]
Eremin, E. V. [2 ,3 ]
Vasiliev, A. D. [2 ]
Gavrilkin, S. Yu. [4 ]
Vereshchagin, S. N. [5 ]
Chikurov, D. S. [1 ]
Krasilin, A. A. [1 ]
Kazak, N. V. [2 ]
机构
[1] Ioffe Inst, Polytech Skaya St 26, St Petersburg 194021, Russia
[2] Kirensky Inst Phys, Akademgorodok 50,Bld 38, Krasnoyarsk 660036, Russia
[3] Reshetnev Siberian State Univ Sci & Technol, 31 Krasnoyarsky Rabochy Av, Krasnoyarsk 660037, Russia
[4] Russian Acad Sci, Lebedev Phys Inst, Leninskiy Pr 14, Moscow 119991, Russia
[5] RAS, Fed Res Ctr KSC SB, Inst Chem & Chem Technol, Akademgorodok 50,Bld 24, Krasnoyarsk 660036, Russia
基金
俄罗斯科学基金会;
关键词
Oxyborates; Cationic distribution; Magnetic phase transitions; Specific heat; EXCHANGE INTERACTIONS; BOND-VALENCE; BORATE; TRANSITION; CATION; LUDWIGITES; REFINEMENT; ANISOTROPY; DISORDER; CO3B2O6;
D O I
10.1016/j.jmmm.2024.172298
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Ni2CrBO5 has been synthesized and investigated by X-ray diffraction, dc magnetization, and specific heat measurements. The unusual cation distribution has been established: the M1 and M3 sites are occupied by Ni2+ ions, the M2 site is by Cr3+ ions, and the M4 site is mixed, featuring both Ni2+ and Cr3+ ions. The magnetic order onsets at TN = 140 K, which is confirmed by a 7-type peak in specific heat, followed by the dome-shaped anomaly of the magnetization at about 30 K. In the magnetically ordered state, a remarkable sequence of temperature-induced magnetization reversal sensitive to the measurement's regime is observed. Dominant antiferromagnetic interactions are characterized by the Weiss temperature 0 = -73 K. The effective magnetic moment of 5.37 i B per formula unit is close to the spin-only one. The effect of the cation distribution on the magnetic properties is discussed.
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页数:8
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