Spin glass behaviors of Ge-doped Tb2NiSi3 compound


Bai X. Wang L. Pan Z. Hao Z. Zhang S. Markhabayeva A.A. Zadorozhnyy V. Cao C.
June 2025Springer

Journal of Materials Science: Materials in Electronics
2025#36Issue 18

Structure and magnetic properties of intermetallic compounds Tb2Ni(Si1-xGex)3 were investigated with Ge-doping contents x = 0, 0.1 0.2 and 0.5. Based on XRD characterization, hexagonal AlB2 type phase of Tb2NiSi3 consists of Tb-ion layers and Ni-Si layers alternating arrangement along the c-axis was confirmed. After Ge doping, a chemically ordered secondary phase appears. With the increase of Ge-doping, content of the secondary phase increases. The magnetic measurements of dc susceptibility and ac susceptibility were done using a superconducting quantum interference device (SQUID) at low temperature. In the temperature dependence of dc susceptibility measurement, obvious anomalies are observed at about 12 K and 4 K for all the samples. At about 12 K, long-range magnetic ordered phase transitions occur, the transition temperatures tend to increase when x increase. At about 4 K, the samples show cluster like spin glass behaviors. The spin glass intensities enhance with the increasing in Ge-doping, which can be mainly attributed to the existence of chemically ordered secondary phase.



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School of Physical Science and Technology, Northwestern Polytechnical University, Xian, 710072, China
Northwest Institute for Non-Ferrous Metal Research, Xian, 710016, China
Faculty of Physics and Technology, Al Farabi Kazakh National University, 71 Al-Farabi Avenue, Almaty, 050040, Kazakhstan
National University of Science and Technology «MISIS», Moscow, 119049, Russian Federation
Research and Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, China

School of Physical Science and Technology
Northwest Institute for Non-Ferrous Metal Research
Faculty of Physics and Technology
National University of Science and Technology «MISIS»
Research and Development Institute of Northwestern Polytechnical University in Shenzhen

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