Magnetic Phase Diagram of Cr1–xMnxGe

Tetsuya Sato, Junichi Kozu, Katsuki Oshiden, Tomohiro Nemoto, Eiji Ohta, Makoto Sakata, Tsuneaki Goto, Toshiro Sakakibara

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Abstract

Detailed dc magnetic measurements were made on the Cr1–xMnxGe alloy system with 0≤x≤0.60 in the temperature range from 4.2 K to 420 K. The alloy system is paramagnetic for 0≤x≤0.06. For 0.09≤x≤0.15 ferromagnetism appears at low temperatures. The system with 0.17≤x≤0.21 shows a double transition from a paramagnetic to a ferromagnetic state at lower temperatures and finally to a mixed phase of ferromagnetic and spin glass ordering. For 0.24≤x≤0.60 spontaneous magnetiztion disappears and a normal spin glass phase is observed. A variety of phase transitions observed in the present alloy system are attributed to the competition between the positive contribution from modified RKKY interaction and the negative contribution from direct exchange interaction to the Mn-Mn exchange interaction.

Original languageEnglish
Pages (from-to)639-646
Number of pages8
JournalJournal of the Physical Society of Japan
Volume57
Issue number2
DOIs
Publication statusPublished - 1988

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Sato, T., Kozu, J., Oshiden, K., Nemoto, T., Ohta, E., Sakata, M., Goto, T., & Sakakibara, T. (1988). Magnetic Phase Diagram of Cr1–xMnxGe. Journal of the Physical Society of Japan, 57(2), 639-646. https://doi.org/10.1143/JPSJ.57.639