Abstract

Three fragments of the Chelyabinsk meteorite have been investigated by Mössbauer spectroscopy in a temperature range of 300–830 K. They are found to contain iron in the composition of various minerals in different physicochemical and crystallographic states. Anomalous behavior of the temperature dependences of hyperfine magnetic fields on iron nuclei in all fragments is demonstrated. The results obtained are qualitatively explained within the concept of structural magnetic phase transitions, in which iron ions play a role of stabilization centers for new crystal structures in specific temperature ranges.

中文翻译：

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车里雅宾斯克陨石磁性的核伽玛共振光谱研究

摘要

车里雅宾斯克陨石的三个碎片已通过Mössbauer光谱在300–830 K的温度范围内进行了研究。发现它们含有铁，这些铁的组成是各种矿物的不同物理化学和晶体学状态。证明了在所有碎片中超细磁场对铁核的温度依赖性的异常行为。在结构磁性相变的概念中定性地解释了获得的结果，其中铁离子在特定温度范围内对新的晶体结构起稳定中心的作用。