Yu. V. Korkh, E. A. Ponomareva, A. V. Druzhinin, E. G. Gerasimov, N. V. Mushnikov, T. V. Kuznetsova
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引用次数: 0
摘要
摘要 通过拉曼光谱首次获得了 LaMn2Si2 化合物的拉曼光谱。研究了拉曼光谱特性在 263-553 K 温度范围内的变化。确定了拉曼光谱方法对温度影响引起的磁态变化的高灵敏度。在居里温度和尼尔温度附近，锰原子振动模式的光谱特征发生了变化。利用磁力显微镜技术研究了室温下 LaMn2Si2 化合物的表面特征。发现 LaMn2Si2 的磁畴结构类型在从 298 K 冷却到 263 K 后发生了变化。
Temperature Studies of the LaMn2Si2 Intermetallide by the Raman Spectroscopy and Magnetic Force Microscopy Methods
Abstract
Raman spectra of the LaMn2Si2 compound were obtained for the first time by Raman spectroscopy. The change in the Raman spectral characteristics in the temperature range of 263–553 K was investigated. The high sensitivity of the Raman spectroscopy method to a change in the magnetic state caused by a temperature influence has been determined. A change in the spectral characteristics of the vibration mode of manganese atoms near the Curie and Neel temperatures has been revealed. The magnetic force microscopy technique was used to investigate the surface features of the LaMn2Si2 compound at room temperature. A change in the type of magnetic domain structure in LaMn2Si2 after cooling from 298 to 263 K has been found.
期刊介绍：
The Physics of Metals and Metallography (Fizika metallov i metallovedenie) was founded in 1955 by the USSR Academy of Sciences. Its scientific profile involves the theory of metals and metal alloys, their electrical and magnetic properties, as well as their structure, phase transformations, and principal mechanical properties. The journal also publishes scientific reviews and papers written by experts involved in fundamental, application, and technological studies. The annual volume of publications amounts to some 250 papers submitted from 100 leading national scientific institutions.
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