Spin Wave-Stiffness Constants of Half-Metallic Ferromagnets ${\rm Co}_{2}YZ$ ( $Y={\rm Cr}$ , Mn, and Fe, $Z={\rm Ga}$ , Al, and Si) Heusler Alloys
作者： Rie Y. Umetsu , Akinari Okubo , Asaya Fujita , Takeshi Kanomata , Kiyohito Ishida
DOI: 10.1109/TMAG.2011.2158521
关键词: Materials science 、 Phase (matter) 、 Condensed matter physics 、 Curie temperature 、 Magnetization 、 Metal 、 Chromium Alloys 、 Excitation 、 Ferromagnetism 、 Spin wave
摘要: The spin-wave stiffness constant D and the Curie temperature TC for series of L21 phase in Co2CrGa, Co2MnGa, Co2Mn(Al1-xSix) , Co2Fe(Al1-xSix), Co2Fe(Ga1-xSix) Heusler alloys were evaluated from thermomagnetization measurements. For alloys, there was a linear relation between . tendency different that Co2Fe(Al1-xSix) is, region 1040 to 1100 K indicating weak concentration dependence, whereas sensitive composition. example, changed 2.28 meV ·nm2 x=1 (Co2FeSi) 5.24 x=0 (Co2FeGa) case alloys. It suggested magnetic stability against Co-based containing Fe element governed not only by excitation but also other kinds excitation.
harvard.edu
elsevier.com
sci-hub.se 参考文章(25)
Ming Zhang, Ekkes Brück, Frank R de Boer, Zhuangzhi Li, Guangheng Wu, The magnetic and transport properties of the Co2FeGa Heusler alloy Journal of Physics D. ,vol. 37, pp. 2049- 2053 ,(2004) , 10.1088/0022-3727/37/15/001
R. Y. Umetsu, K. Kobayashi, A. Fujita, R. Kainuma, K. Ishida, Magnetic properties and stability of L21 and B2 phases in the Co2MnAl Heusler alloy Journal of Applied Physics. ,vol. 103, ,(2008) , 10.1063/1.2836677
Takahide Kubota, Jaroslav Hamrle, Yuya Sakuraba, Oksana Gaier, Mikihiko Oogane, Akimasa Sakuma, Burkard Hillebrands, Koki Takanashi, Yasuo Ando, Structure, exchange stiffness, and magnetic anisotropy of Co2MnAlxSi1-x Heusler compounds Journal of Applied Physics. ,vol. 106, pp. 113907- ,(2009) , 10.1063/1.3265428
I. Galanakis, P. H. Dederichs, N. Papanikolaou, Slater-Pauling behavior and origin of the half-metallicity of the full-Heusler alloys Physical Review B. ,vol. 66, pp. 174429- ,(2002) , 10.1103/PHYSREVB.66.174429
R. Pauthenet, Spin‐waves in nickel, iron, and yttrium‐iron garnet Journal of Applied Physics. ,vol. 53, pp. 2029- 2031 ,(1982) , 10.1063/1.330694
Oksana Gaier, Jaroslav Hamrle, Simon Trudel, Burkard Hillebrands, Horst Schneider, Gerhard Jakob, Exchange stiffness in the Co2FeSi Heusler compound Journal of Physics D. ,vol. 42, pp. 232001- ,(2009) , 10.1088/0022-3727/42/23/232001
G. Shirane, R. Nathans, O. Steinsvoll, H. A. Alperin, S. J. Pickart, Measurement of the Magnon Dispersion Relation of Iron Physical Review Letters. ,vol. 15, pp. 146- 148 ,(1965) , 10.1103/PHYSREVLETT.15.146
J Kübler, AR William, CB Sommers, None, Formation and coupling of magnetic moments in Heusler alloys Physical Review B. ,vol. 28, pp. 1745- 1755 ,(1983) , 10.1103/PHYSREVB.28.1745
Lance Ritchie, Gang Xiao, Y. Ji, T. Y. Chen, C. L. Chien, Ming Zhang, Jinglan Chen, Zhuhong Liu, Guangheng Wu, X. X. Zhang, Magnetic, structural, and transport properties of the Heusler alloysCo2MnSiand NiMnSb Physical Review B. ,vol. 68, pp. 104430- ,(2003) , 10.1103/PHYSREVB.68.104430
R. Y. Umetsu, K. Kobayashi, A. Fujita, R. Kainuma, K. Ishida, K. Fukamichi, A. Sakuma, Magnetic properties, phase stability, electronic structure, and half-metallicity of L 2 1 -type Co 2 ( V 1 − x Mn x ) Ga Heusler alloys Physical Review B. ,vol. 77, pp. 104422- ,(2008) , 10.1103/PHYSREVB.77.104422