Magnetization reversal of a Nd-Cu-infiltrated Nd-Fe-B nanocrystalline magnet observed with small-angle neutron scattering
Abstract
The magnetization reversal process of Nd-Fe-B nanocrystalline magnets infiltrated with Nd-Cu alloy was examined using small-angle neutron scattering (SANS). The magnetic-field dependence of SANS intensity revealed a qualitative difference between Nd-Cu-infiltrated samples and as-deformed samples. Insufficient magnetic isolation along the direction perpendicular to the nominal c-axis is expected from comparable SANS intensities for different ranges of q values along this direction. For small q values near the coercivity field, Nd-Cu-infiltrated samples show a noticeable reduction in SANS intensity along the nominal c-axis, which is parallel to the external magnetic field. This indicates less spatial fluctuation of magnetic moments in Nd-Cu-infiltrated samples, owing to magnetically isolated Nd{sub 2}Fe{sub 14}B grains.
- Authors:
-
- Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, 305-0803 Tsukuba (Japan)
- Elements Strategy Initiative Center for Magnetic Materials, National Institute for Materials Science, 1-2-1 Sengen, 305-0047 Tsukuba (Japan)
- Toyota Motor Corporation, Toyota, Aichi 471-8571 (Japan)
- Toyota Central R and D Labs, Inc., Aichi 480-1192 (Japan)
- Helmholtz-Zentrum Berlin für Materialien and Energie, 14109 Berlin (Germany)
- Publication Date:
- OSTI Identifier:
- 22409945
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Applied Physics
- Additional Journal Information:
- Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BORON ALLOYS; COERCIVE FORCE; COMPARATIVE EVALUATIONS; COPPER ALLOYS; CRYSTALS; FLUCTUATIONS; IRON ALLOYS; MAGNETIC FIELDS; MAGNETIC MATERIALS; MAGNETIC MOMENTS; MAGNETIZATION; MAGNETS; NANOSTRUCTURES; NEODYMIUM ALLOYS; NEUTRON DIFFRACTION; SMALL ANGLE SCATTERING
Citation Formats
Saito, Kotaro, Ono, Kanta, Ueno, Tetsuro, Yano, Masao, Shoji, Tetsuya, Sakuma, Noritsugu, Manabe, Akira, Kato, Akira, Harada, Masashi, and Keiderling, Uwe. Magnetization reversal of a Nd-Cu-infiltrated Nd-Fe-B nanocrystalline magnet observed with small-angle neutron scattering. United States: N. p., 2015.
Web. doi:10.1063/1.4908026.
Saito, Kotaro, Ono, Kanta, Ueno, Tetsuro, Yano, Masao, Shoji, Tetsuya, Sakuma, Noritsugu, Manabe, Akira, Kato, Akira, Harada, Masashi, & Keiderling, Uwe. Magnetization reversal of a Nd-Cu-infiltrated Nd-Fe-B nanocrystalline magnet observed with small-angle neutron scattering. United States. https://doi.org/10.1063/1.4908026
Saito, Kotaro, Ono, Kanta, Ueno, Tetsuro, Yano, Masao, Shoji, Tetsuya, Sakuma, Noritsugu, Manabe, Akira, Kato, Akira, Harada, Masashi, and Keiderling, Uwe. 2015.
"Magnetization reversal of a Nd-Cu-infiltrated Nd-Fe-B nanocrystalline magnet observed with small-angle neutron scattering". United States. https://doi.org/10.1063/1.4908026.
@article{osti_22409945,
title = {Magnetization reversal of a Nd-Cu-infiltrated Nd-Fe-B nanocrystalline magnet observed with small-angle neutron scattering},
author = {Saito, Kotaro and Ono, Kanta and Ueno, Tetsuro and Yano, Masao and Shoji, Tetsuya and Sakuma, Noritsugu and Manabe, Akira and Kato, Akira and Harada, Masashi and Keiderling, Uwe},
abstractNote = {The magnetization reversal process of Nd-Fe-B nanocrystalline magnets infiltrated with Nd-Cu alloy was examined using small-angle neutron scattering (SANS). The magnetic-field dependence of SANS intensity revealed a qualitative difference between Nd-Cu-infiltrated samples and as-deformed samples. Insufficient magnetic isolation along the direction perpendicular to the nominal c-axis is expected from comparable SANS intensities for different ranges of q values along this direction. For small q values near the coercivity field, Nd-Cu-infiltrated samples show a noticeable reduction in SANS intensity along the nominal c-axis, which is parallel to the external magnetic field. This indicates less spatial fluctuation of magnetic moments in Nd-Cu-infiltrated samples, owing to magnetically isolated Nd{sub 2}Fe{sub 14}B grains.},
doi = {10.1063/1.4908026},
url = {https://www.osti.gov/biblio/22409945},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {Thu May 07 00:00:00 EDT 2015},
month = {Thu May 07 00:00:00 EDT 2015}
}