Anisotropic magnetic diffuse scattering in an easy-plane type antiferromagnet ErNi2Ge2

Y. Tabata, Teruo Yamazaki, M. Okue, H. Nakamura, M. Matsuura

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Abstract

We report on neutron scattering studies of a rare earth intermetallic compound ErNi2Ge2. Polarized neutron scattering experiments revealed that the magnetic ordered moment m lies in ab-plane. Taking account of a lack of the third higher harmonic reflection, ErNi2Ge2 is considered to have a helical magnetic structure. The magnetic scattering profiles along the [100]- and the [110]-directions are well described by the sum of Gaussian and modified-Lorentzian terms, even far below TN, indicating that short-range orders coexist with a long-range order. Interestingly, the modified-Lorentzian-type diffuse scattering is not present in the profiles along the [001]-direction. The anisotropy of the diffuse scattering suggests that the short-range-order consists of one dimensional long-range helices along the c-axis.

Original languageEnglish
Article number012078
JournalJournal of Physics: Conference Series
Volume145
Issue number1
DOIs
Publication statusPublished - 2009 Jan 1
Externally publishedYes
Event4th International Conference on Highly Frustrated Magnetism 2008, HFM 2008 - Braunschweig, Germany
Duration: 2008 Sep 72008 Sep 12

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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