Effects of proton irradiation on electronic structure of NdFeB permanent magnets

被引：8

作者：

Yang, L. ^{[1
]}

Zhen, L. ^{[1
]}

Xu, C. Y. ^{[1
]}

Sun, X. Y. ^{[1
]}

Shao, W. Z. ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2009年 / 267卷 / 18期

基金：

中国国家自然科学基金;

关键词：

NdFeB permanent magnets; Proton irradiation; Electronic structure; X-ray absorption; ND-FE-B; GAMMA-RAY IRRADIATION; NEUTRON-IRRADIATION; FLUX LOSS; RADIATION-DAMAGE; TEMPERATURE; BEAM; ENERGY;

D O I：

10.1016/j.nimb.2009.06.023

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Effects of proton irradiation on electronic structure and atomic local structure of N35EH-type NdFeB permanent magnet were investigated by soft X-ray absorption spectrometry and Mossbauer spectrometry. The local coordination environment of Fe atoms changes after proton irradiation, and the average hyper-fine field H-in of the magnets decreases from 288.4 to 286.9 kOe. The effects of irradiation on Fe atoms local environment at different lattice sites are different. The near edge structure of Fe L-3 edge is changed, indicating the density of unoccupied state of Fe 3d electrons increases after proton irradiation. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：3084 / 3086

页数：3

共 20 条

[1] Measurement of radiation-induced demagnetization of Nd-Fe-B permanent magnets
Alderman, J
Job, PK
Martin, RC
Simmons, CM
Owen, GD
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 481 (1-3) : 9 - 28
[2] High-energy electron irradiation of NdFeB permanent magnets: Dependence of radiation damage on the electron energy
Bizen, Teruhiko
Asano, Yoshihiro
Marechal, Xavier-Marie
Seike, Takamitsu
Aoki, Tsuyoshi
Fukami, Kenji
Hosoda, Naoyasu
Yonehara, Hiroto
Takagi, Tetsuya
Hara, Toru
Tanaka, Takashi
Kitamura, Hideo
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2007, 574 (03) : 401 - 406
[3] NEUTRON-IRRADIATION STUDY OF ND-FE-B PERMANENT-MAGNETS MADE FROM MELT-SPUN RIBBONS
BROWN, RD
COST, JR
MEISNER, GP
BREWER, EG
[J]. JOURNAL OF APPLIED PHYSICS, 1988, 64 (10) : 5305 - 5307
[4] EFFECTS OF NEUTRON-IRRADIATION ON MAGNETIC-PERMEABILITY OF AMORPHOUS AND CRYSTALLINE MAGNETIC-ALLOYS
BROWN, RD
COST, JR
STANLEY, JT
[J]. JOURNAL OF APPLIED PHYSICS, 1984, 55 (06) : 1754 - 1756
[5] Electronic states and structural characterization in single-crystal Fe-Ni-O alloy thin films grown by molecular beam epitaxy
Chang, CL
Chern, G
Chen, CL
Hsieh, HH
Dong, CL
Pong, WF
Chao, CH
Chien, HC
Chang, SL
[J]. SOLID STATE COMMUNICATIONS, 1999, 109 (09) : 599 - 604
[6] EFFECTS OF NEUTRON-IRRADIATION ON ND-FE-B MAGNETIC-PROPERTIES
COST, JR
BROWN, RD
GIORGI, AL
STANLEY, JT
[J]. IEEE TRANSACTIONS ON MAGNETICS, 1988, 24 (03) : 2016 - 2019
[7] X-RAY-ABSORPTION SPECTROSCOPY AT THE FE L(2,3) THRESHOLD IN IRON-OXIDES
CROCOMBETTE, JP
POLLAK, M
JOLLET, F
THROMAT, N
GAUTIERSOYER, M
[J]. PHYSICAL REVIEW B, 1995, 52 (05): : 3143 - 3150
[8] Anisotropic spin-orbit coupling and magnetocrystalline anisotropy in vicinal Co films
Dhesi, SS
van der Laan, G
Dudzik, E
Shick, AB
[J]. PHYSICAL REVIEW LETTERS, 2001, 87 (06) : 67201 - 1
[9] Effect of γ-ray irradiation on the magnetic properties of NdFeB and Fe-Cr-Co permanent magnets
Gao, RS
Zhen, L
Li, GA
Xu, CY
Shao, WZ
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 302 (01) : 156 - 159
[10] GROOT FMF, 1990, PHYS REV B, V42, P5459

← 1 2 →