Anomalous slow dynamics in the metallic helimagnet Gd1-x Y x

Teruo Yamazaki, Y. Tabata, T. Waki, H. Nakamura

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

AC-suseptibility measurements were performed in the metallic helimagnet Gd1-xYx alloy. A remarkable increase of the imaginary part of the ac-suseptibility was observed in the temperature range of the helimagnetic phase. Moreover, a strong nonlinearity of the magnetization was observed at paramagnetic-helimagnetic transition temperature TN. On the other hand, These anomalous behavior were not observed in similar rare-earth helimagnets Ho and Ho1-xYx. It strongly suggests that the weak magnetic anisotropy of the Gd-moments is responsible for the anomalous slow dynamics in the helimagnetic phase and for the strong nonlinearity of the magnetization at TN. The slow dynamics may result from a chiral-domain motion, or a long-time variation of the period of the helimagnetic structure.

Original languageEnglish
Article number012068
JournalJournal of Physics: Conference Series
Volume320
DOIs
Publication statusPublished - 2011 Jan 1
Externally publishedYes
EventInternational Conference on Frustration in Condensed Matter, ICFCM - Sendai, Japan
Duration: 2011 Jan 112011 Jan 14

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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