Tunghai University Institutional Repository:Item 310901/24777
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    題名: The phase evolution, magnetic and exchange bias properties in Fe 50Mn24+xGa26-x (x = 0-3) melt-spun ribbons
    作者: Shih, C.W.;Zhao, X.G.;Chang, H.W.;Chang, W.C.;Zhang, Z.D.
    貢獻者: Department of Applied Physics, Tunghai University
    關鍵詞: Exchange bias;Magnetic phase transitions;Melt spinning
    日期: 2013
    上傳時間: 2014-05-30T02:25:39Z (UTC)
    摘要: Effect of Ga content on the phase constitution, magnetic phase transition temperatures (TC), and exchange bias (EB) behaviors of Fe 50Mn24+xGa26-x (x = 0, 0.5, 1, 3) as-spun ribbons have been investigated. Fe50Mn 24Ga26 ribbon exhibits a magnetic phase transition of B2-type structure from FM to PM state at TC1 = 190 K. Another magnetic phase transition of face-center-cubic structure from AFM to FM takes place at TC2 = 240 K for Fe50Mn25Ga 25 sample. The values of exchange bias field (HE) at 10 K after field-cooling (FC) at 30 kOe from 300 K are 14, 41, 1886, 1740 Oe, respectively, as x is increased from 0 to 3. The phenomena are attributed to the change of exchange interactions at FM/AFM interfaces due to the change of proportion of FM and AFM phases in low temperature magnetic states. The maximum exchange bias field HE = 2.4 kOe at 10 K after field-cooling at 40 kOe is observed for Fe50Mn25Ga25. ? 2013 Elsevier B.V. All rights reserved.
    關聯: Journal of Alloys and Compounds,Vol.570,P.14-18
    顯示於類別:[應用物理學系所] 期刊論文

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