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Possible Magnetic Structure with a Tilted Helical Plane in SmBe13 Probed by 9Be-NMR Study

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Title: Possible Magnetic Structure with a Tilted Helical Plane in SmBe13 Probed by 9Be-NMR Study
Authors: Hidaka, Hiroyuki Browse this author →KAKEN DB
Ihara, Yoshihiko Browse this author
Yanagisawa, Tatsuya Browse this author →KAKEN DB
Amitsuka, Hiroshi Browse this author →KAKEN DB
Issue Date: 15-Sep-2021
Publisher: Physical Society of Japan
Journal Title: Journal of the Physical Society of Japan
Volume: 90
Issue: 9
Start Page: 093701
Publisher DOI: 10.7566/JPSJ.90.093701
Abstract: 9Be-NMR measurements were performed using single crystalline SmBe13 in order to investigate a magnetic structure of a low-temperature ordering state microscopically. We observed a spectral broadening in the ordered state, and the broadened spectral shape depends on the magnetic field directions. By comparing the experimentally obtained and simulated NMR spectra for magnetic fields along the cubic [001] and [011] directions, we argue a helical structure with a basal plane tilted from the (001) plane in low-field ordering region under the assumption of a helical with a propagation vector of (0, 0, 1/3) found in other RBe13 compounds (R = rare earths). Such a tilted helical structure is explained by a combination of an ellipse helical in the (001) plane and a longitudinal magnetic density wave along the [001] direction. Considering a magnetic easy axis parallel to [001] revealed by the magnetization measurements, the peculiar helical structure in SmBe13 may be built on delicate balance among exchange interactions, dipole-dipole interaction, and single-ion magnetic anisotropy due to the crystalline electric field.
Rights: ©2021 The Physical Society of Japan
Type: article (author version)
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 日髙 宏之

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