Novel magnetic chiral structures and unusual temperature hysteresis in the metallic helimagnet MnP

Teruo Yamazaki, Yoshikazu Tabata, Takeshi Waki, Taku J. Sato, Masato Matsuura, Kenji Ohoyama, Makoto Yokoyama, Hiroyuki Nakamura

研究成果: Article査読

15 被引用数 (Scopus)

抄録

We have reinvestigated the magnetic properties of the classical metallic helimagnet MnP by magnetization and neutron scattering experiments. Our neutron scattering results indicate that the previously reported magnetic structure in the low-temperature (LT) helimagnetic phase (T < 47 K) should be modified to an alternately tilted helimagnetic structure produced by the Dzyaloshinsky-Moriya interaction. In the intermediate temperature (IT) range between the LT helimagnetic phase and the high-temperature (HT) ferromagnetic phase along the c-axis, 47 < T < 252 K, we have found a weak ferromagnetic behavior along the b-axis. Surprisingly, the IT weak ferromagnetic phase has two different states, namely, the large magnetization (LM) and small magnetization (SM) states. The SM state emerges with cooling from the paramagnetic phase above 292K via the HT ferromagnetic phase and LM state emerges with warming from the LT helimagnetic phase. The weak ferromagnetism along the b-axis and the unusual temperature hysteresis in the IT phase can be understood by assuming a spontaneous formation of the stripe structure consisting of alternately arranged HT ferromagnetic and LT helimagnetic domains.

本文言語English
論文番号054711
ジャーナルjournal of the physical society of japan
83
5
DOI
出版ステータスPublished - 2014 5 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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