Spin Dynamics in Invar(Fe65Ni35,Fe3Pt) and Non Invar(Fe50Ni50) Alloys
-
- Onodera Shigehumi
- Physics Department, Tohoku University
-
- Ishikawa Yoshikazu
- Physics Department, Tohoku University
-
- Tajima Keisuke
- Physics Department, Tohoku University
書誌事項
- タイトル別名
-
- Spin Dynamics in Invar (Fe<SUB>65</SUB>Ni<SUB>35</SUB>, Fe<SUB>3</SUB>Pt) and Non Invar (Fe<SUB>50</SUB>Ni<SUB>50</SUB>) Alloys
- Spin Dynamics in Invar Fe65Ni35 Fe3Pt a
この論文をさがす
抄録
Spin dynamics of a disordered Invar alloy Fe65Ni35, an ordered Invar alloy Fe3Pt as well as a non Invar disordered alloy Fe50Ni50 have been studied by neutron scattering. It has been found that both Invar alloys show common anomalous dynamical properties. Well defined magnon groups could be detected up to the Curie temperature. The spin wave stiffness constant D(T) varies with temperature as D(T)=D0(1−CT5⁄2). The magnon excitations, however, could explain only about a half of the temperature variation of magnetization M(T) for the Invar alloys, in spite of the fact that the integrated intensity measurements of the magnon spectra suggest that no other excitations take part in M(T). M(T) of non Invar alloy could be accounted for by the magnon excitations. The magnons in the Invar alloys dampen significantly with increasing temperature as was apparent in the linewidth Γ(q, T) obeying a relation Γ(q, T)=(Γ0+aTα)q2 with α≤1, quite different from the Heisenberg system.
収録刊行物
-
- Journal of the Physical Society of Japan
-
Journal of the Physical Society of Japan 50 (5), 1513-1522, 1981
一般社団法人 日本物理学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390282679161308800
-
- NII論文ID
- 110002272808
- 130003897025
- 210000089355
-
- NII書誌ID
- AA00704814
-
- BIBCODE
- 1981JPSJ...50.1513O
-
- COI
- 1:CAS:528:DyaL3MXitFyltbc%3D
-
- ISSN
- 13474073
- 00319015
-
- NDL書誌ID
- 2313442
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可