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

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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.

Funders	Funder number
Priority Assistance for the Formation of Worldwide Renowned Centers of Research
Ministry of Education, Culture, Sports, Science and Technology

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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",

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publisher = "American Institute of Physics",

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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

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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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Neutron diffraction study of magnetic structure in DyCu under magnetic field

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