Synthesis, Crystal Structure, and Magnetic Characterization on a Frustrated S = 1 Magnet KNi(PO3)3

IF 1.6 4区物理与天体物理 Q3 PHYSICS, APPLIED

Journal of Superconductivity and Novel Magnetism Pub Date : 2025-03-17 DOI:10.1007/s10948-024-06884-6

Xiaofeng Li, Yuxia Gao, Zhaoming Tian, Weijie Ren, Xin Sun, Mingli Wang

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Abstract

KNi(PO₃)₃ was successfully synthesized by solid-state method and the magnetic properties were characterized. The crystal structure of KNi(PO₃)₃ belongs to trigonal crystal system with space group R3, where Ni²⁺ ions form the distorted honeycomb-lattice within the ab-plane stacking in the “ABAB” type fashion along the c-axis. Magnetization measurements reveal the presence of antiferromagnetic (AFM) interaction with Curie Weiss (CW) temperature θ_CW = − 12.905 K but without long-range magnetic order down to 2 K. Notably, the CW fitted effective moment µ_eff = 3.35µ_B and saturated magnetization M_S = 2μ_B/Ni²⁺ at 2 K support KNi(PO₃)₃ as an S = 1 spin system. Intriguingly, the zero-field specific heat exhibits a broad peak maximized at ~ 2.5 K indicating the onset of short-range spin correlation between Ni²⁺ ions, while the integrated magnetic entropy (S_mag) is close to the expected Rln3 for S = 1 system, indicative of large spin fluctuation below 2 K driven by spin frustration.

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来源期刊

Journal of Superconductivity and Novel Magnetism 物理-物理：凝聚态物理

CiteScore

3.70

自引率

11.10%

发文量

342

审稿时长

3.5 months

期刊介绍： The Journal of Superconductivity and Novel Magnetism serves as the international forum for the most current research and ideas in these fields. This highly acclaimed journal publishes peer-reviewed original papers, conference proceedings and invited review articles that examine all aspects of the science and technology of superconductivity, including new materials, new mechanisms, basic and technological properties, new phenomena, and small- and large-scale applications. Novel magnetism, which is expanding rapidly, is also featured in the journal. The journal focuses on such areas as spintronics, magnetic semiconductors, properties of magnetic multilayers, magnetoresistive materials and structures, magnetic oxides, etc. Novel superconducting and magnetic materials are complex compounds, and the journal publishes articles related to all aspects their study, such as sample preparation, spectroscopy and transport properties as well as various applications.