Magnetic behaviors in melt spun Fe{sub 52−x}Mn{sub 23+x}Ga{sub 25} (x = 0–3) ribbons

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4864042· OSTI ID:22273847

Shih, C. W.; Lee, Y. I.; Zhao, X. G. ^[1]; Chang, H. W. ^[2]; Ma, S. C. ^[1]

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1. Department of Physics, National Chung Cheng University, Ming-Hsiung, Chia-Yi 62102, Taiwan (China)
2. Department of Applied Physics, Tunghai University, Taichung 40704, Taiwan (China)

The effect of volume fraction of B2-type ferromagnetic (FM) phase on magnetic behavior of melt-spun Fe{sub 52−x}Mn{sub 23+x}Ga{sub 25} (x = 0, 1, 2, and 3) ribbons has been investigated. X-ray diffraction (XRD) results show that the volume fraction of the B2 phase is decreased, accompanied by the increased antiferromagnetic (AFM) fcc phase, with increasing x. The magnetization isotherms of these ribbons at different temperatures demonstrate that there exists a critical field H{sub CR} from AFM to FM state, and the H{sub CR} decreases and vanishes finally with increasing temperature. High exchange bias field (H{sub EB}) at 10 K through a cooling field at H{sub CR} from 300 K could be found and correlated to the volume fraction of B2-type FM phase. Both H{sub CR} and H{sub EB} are increased with decreasing the amount of B2-type FM phase. The H{sub CR} is increased from 20 kOe for x = 0 to 50 kOe for x = 3, and H{sub EB} is increased from 0.9 kOe for x = 0 to 2.5 kOe for x = 2. The latter phenomenon might be attributed to the change of exchange interactions at FM/AFM interfaces due to the change of proportion of FM and AFM phase at low temperature.

• OSTI ID: 22273847
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETIC MATERIALS
ANTIFERROMAGNETISM
ATOMIC FORCE MICROSCOPY
CONCENTRATION RATIO
CRITICAL FIELD
EXCHANGE INTERACTIONS
FCC LATTICES
GALLIUM
INTERFACES
INTERMETALLIC COMPOUNDS
IRON
ISOTHERMS
MAGNETIZATION
MANGANESE
TEMPERATURE DEPENDENCE
X-RAY DIFFRACTION