Title :
Microstructure, Magnetic Properties, and Spin Polarization of Quaternary Heusler Alloys
Author :
Karthik, S.V. ; Rajanikanth, A. ; Takahashi, Y. ; Hono, K.
Author_Institution :
Univ. of Tsukuba, Tsukuba
Abstract :
This article presents experiments on the magnetic characterisation of quaternary Heusler alloys for spintronic applications. In this work, polycrystalline Co2Cr1-XFeXAl (CCFA), Co2Cr1-XVXAl (CCVA) and Co2V1-XFeXAl (CVFA) bulk alloys were prepared by arc melting for mictrostructural, magnetic, and spin polarised properties. Magnetic measurements were carried out using VSM and SQUID magnetometry. Material microstructure was investigated through XRD and TEM analysis. And finally, spin polarisation measurements were carried out using point contact Andreev reflection technique (PCAR).
Keywords :
X-ray diffraction; aluminium alloys; chromium alloys; cobalt alloys; ferromagnetic materials; iron alloys; magnetoelectronics; point contact spectroscopy; spin polarised transport; transmission electron microscopy; tunnelling magnetoresistance; vanadium alloys; Co2CrFeAl; Co2CrVAl; Co2VFeAl; Heusler alloy magnetic properties; Heusler alloy microstructure; Heusler alloy spin polarization; SQUID magnetometry; TEM; VSM; XRD; arc melting; magnetic characterisation; point contact Andreev reflection technique; polycrystalline CCFA bulk alloy; polycrystalline CCVA bulk alloy; polycrystalline CVFA bulk alloy; quaternary Heusler alloys; spintronic applications; vibrating sample magnetometry; Aluminum alloys; Chromium alloys; Cobalt alloys; Iron alloys; Magnetic properties; Magnetic variables measurement; Magnetoelectronics; Microstructure; Polarization; SQUIDs;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376102
