INELASTIC NEUTRON-SCATTERING MEASUREMENTS ON ND2FE14B AND Y2FE14B SINGLE-CRYSTALS

被引：14
作者：
MAYER, HM
STEINER, M
STUSSER, N
WEINFURTER, H
DORNER, B
LINDGARD, PA
CLAUSEN, KN
HOCK, S
VERHOEF, R
机构：
[1] UNIV MAINZ,INST PHYS,W-6500 MAINZ,GERMANY
[2] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE
[3] RISO NATL LAB,DK-4000 ROSKILDE,DENMARK
[4] VACUUMSCHMELZE GMBH,W-6450 HANAU,GERMANY
[5] UNIV AMSTERDAM,VAN DER WAALS ZEEMANN LAB,1018 XE AMSTERDAM,NETHERLANDS
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1992年 / 104卷 / pt 2期
关键词：
D O I：
10.1016/0304-8853(92)90590-K
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Inelastic neutron scattering measurements have been carried out on Nd2Fe14B and Y2Fe14B single crystals. Temperature dependent acoustic magnon dispersion curves have been found along the high-symmetry directions [0,0,1] and [1,0,0] with a gap at (0,0,2). Soft mode behaviour at spin wave vector q = 0 was observed for Nd2Fe14B near the spin reorientation temperature. The inelastic scattering intensity decreases steeply for larger q. Therefore, the dispersion curves could be measured until the middle of the Brillouin zone only. The experimental results are discussed in the frame of a classical spin wave model.
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收藏
页码：1295 / 1297
页数：3
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