Neutron diffraction study of magnetic structure in DyCu under magnetic field

Motoyoshi Yasui; Tomoyuki Terai; Tomoyuki Kakeshita; Masaaki Matsuda; Naoto Metoki; Hiroyuki Nojiri

doi:10.1063/1.2832658

Neutron diffraction study of magnetic structure in DyCu under magnetic field

Motoyoshi Yasui
, Tomoyuki Terai
, Tomoyuki Kakeshita
, Masaaki Matsuda
, Naoto Metoki
, Hiroyuki Nojiri

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We have investigated the magnetic structure of the first field-induced phase (FM- I111) of DyCu under a magnetic field applied in the [1 1 1] direction at 2.8 K, which is below TN =63.0 K, by means of neutron diffraction experiments using a single crystal. With the magnetic transition from the antiferromagnetic (AFM) phase to the FM- I111 phase at 8.0 T, the intensity of 1 2 1- 2 0 reflection decreases sharply. The intensity in the FM- I111 phase is about three-fourths of the intensity in the AFM phase. This experimental result suggests that the magnetic structure model proposed by Amara [J. Phys. Condens. Matter 9, 7441 (1997)] is appropriate for the FM- I111 phase. Considering the present results and the previous results reported by Amara, we have quantitatively evaluated the exchange and quadrupolar interaction energies based on a mean-field approximation. These interaction energies in the AFM and FM- I111 phases are found to be comparable.

Original language	English
Article number	07B710
Journal	Journal of Applied Physics
Volume	103
Issue number	7
DOIs	https://doi.org/10.1063/1.2832658
State	Published - 2008
Externally published	Yes

Funding

This study was supported by Priority Assistance for the Formation of Worldwide Renowned Centers of Research—The Global COE Program ((Project: Center of Excellence for Advanced Structural and Functional Materials Design) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) Japan.

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10.1063/1.2832658

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title = "Neutron diffraction study of magnetic structure in DyCu under magnetic field",

abstract = "We have investigated the magnetic structure of the first field-induced phase (FM- I111) of DyCu under a magnetic field applied in the [1 1 1] direction at 2.8 K, which is below TN =63.0 K, by means of neutron diffraction experiments using a single crystal. With the magnetic transition from the antiferromagnetic (AFM) phase to the FM- I111 phase at 8.0 T, the intensity of 1 2 1- 2 0 reflection decreases sharply. The intensity in the FM- I111 phase is about three-fourths of the intensity in the AFM phase. This experimental result suggests that the magnetic structure model proposed by Amara [J. Phys. Condens. Matter 9, 7441 (1997)] is appropriate for the FM- I111 phase. Considering the present results and the previous results reported by Amara, we have quantitatively evaluated the exchange and quadrupolar interaction energies based on a mean-field approximation. These interaction energies in the AFM and FM- I111 phases are found to be comparable.",

author = "Motoyoshi Yasui and Tomoyuki Terai and Tomoyuki Kakeshita and Masaaki Matsuda and Naoto Metoki and Hiroyuki Nojiri",

year = "2008",

doi = "10.1063/1.2832658",

language = "English",

volume = "103",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Neutron diffraction study of magnetic structure in DyCu under magnetic field

AU - Yasui, Motoyoshi

AU - Terai, Tomoyuki

AU - Kakeshita, Tomoyuki

AU - Matsuda, Masaaki

AU - Metoki, Naoto

AU - Nojiri, Hiroyuki

PY - 2008

Y1 - 2008

N2 - We have investigated the magnetic structure of the first field-induced phase (FM- I111) of DyCu under a magnetic field applied in the [1 1 1] direction at 2.8 K, which is below TN =63.0 K, by means of neutron diffraction experiments using a single crystal. With the magnetic transition from the antiferromagnetic (AFM) phase to the FM- I111 phase at 8.0 T, the intensity of 1 2 1- 2 0 reflection decreases sharply. The intensity in the FM- I111 phase is about three-fourths of the intensity in the AFM phase. This experimental result suggests that the magnetic structure model proposed by Amara [J. Phys. Condens. Matter 9, 7441 (1997)] is appropriate for the FM- I111 phase. Considering the present results and the previous results reported by Amara, we have quantitatively evaluated the exchange and quadrupolar interaction energies based on a mean-field approximation. These interaction energies in the AFM and FM- I111 phases are found to be comparable.

AB - We have investigated the magnetic structure of the first field-induced phase (FM- I111) of DyCu under a magnetic field applied in the [1 1 1] direction at 2.8 K, which is below TN =63.0 K, by means of neutron diffraction experiments using a single crystal. With the magnetic transition from the antiferromagnetic (AFM) phase to the FM- I111 phase at 8.0 T, the intensity of 1 2 1- 2 0 reflection decreases sharply. The intensity in the FM- I111 phase is about three-fourths of the intensity in the AFM phase. This experimental result suggests that the magnetic structure model proposed by Amara [J. Phys. Condens. Matter 9, 7441 (1997)] is appropriate for the FM- I111 phase. Considering the present results and the previous results reported by Amara, we have quantitatively evaluated the exchange and quadrupolar interaction energies based on a mean-field approximation. These interaction energies in the AFM and FM- I111 phases are found to be comparable.

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DO - 10.1063/1.2832658

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SN - 0021-8979

VL - 103

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 7

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ER -

Neutron diffraction study of magnetic structure in DyCu under magnetic field

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