Co/IrMn 이층막의 자기적 특성과 Co 두께 및 어닐링의 영향

정정규; 이찬규; 구본흔; 이건환; 야스노리 하야시; Jung-Gyu Jung; Chan-Gyu Lee; Bon-Heun Koo; Gun-Hwan Lee; Yasunori Hayashi

Korean Journal of Materials Research, Vol.13, No.7, 447-452, July, 2003

DOI10.3740/MRSK.2003.13.7.447 Export Citation

Co/IrMn 이층막의 자기적 특성과 Co 두께 및 어닐링의 영향

Effects of Thickness of Ferromagnetic Co Layer and Annealing on the Magnetic Properties of Co/IrMn Bilayers.

정정규^†, 이찬규, 구본흔¹, 이건환², 야스노리 하야시

창원대학교 금속재료공학과
¹창원대학교 세라믹공학과
²한국기계연구원

Jung-Gyu Jung^†, Chan-Gyu Lee, Bon-Heun Koo¹, Gun-Hwan Lee², and Yasunori Hayashi

Department of Metallurgy and Materials Sceince, Changwon National University, Korea
¹Department of Ceramic Science and Engineering, Changwon National University, Korea
²Korea Institute of Machinery & Materials, Korea

E-mail:

Effects of annealing and thickness of Co layer in Co/IrMn bilayers on the magnetic properties have been investigated. The highest interfacial exchange coupling energy( = 0.12 erg/) was obtained for 10 nm Co layer thickness. Exchange bias field is inversely proportional to the magnetization, the thickness of the pinned layer, and the grain size of antiferromagnetic layer. Also it is related to the interfacial exchange energy difference, which is expected to depend on the surface roughness. These results almost agree with the random-field model of exchange anisotropy proposed by Malozemoff. Exchange bias field decreased slowly with increasing annealing temperature up to X. However, exchange bias field increased above .

Keywords:random-field-model;Irmn;magnetic properties;annealing;sputtering

[References]

Malozemoff AP, Phys. Rev. B, 35, 3679 (1987)
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Baibich MN, Broto JM, Fert A, Nguyen Van Dau F, Petroff F, Etienne P, Creuzet G, Friederich A, Chazelas J, Phys. Rev. Lett., 61(21), 2472 (1988)
Anderson G, Huai Y, Miloslawsky L, J. Appl. Phys., 87(9), 6989 (2000)
Kools JCS, IEEE Trans. Magn., 32(4), 3165 (1996)
Xu M, Lu Z, Yang T, Liu C, Cui S, Mai Z, Lai W, Jia Q, Zheng W, J. Appl. Phys., 92(4), 2052 (2002)
Lin T, Mauri D, Staud N, Hwang C, Gorman GL, Appl. Phys. Lett., 65(9), 1183 (1994)
Fuke HN, Saito K, Kamiguchi Y, Iwasaki H, Sahashi M, J. Appl. Phys., 81(8), 4004 (1997)
Van Driel J, Coehoom R, Lenssen KMH, Kuiper AET, De Boer FR, J. Appl. Phys., 85(8), 5522 (1999)
Schulthess TC, Butler WH, J. Appl. Phys., 85(8), 5510 (1999)
Goldman A, Hanbook of Madern Ferromagnetic Materials, p.57, Kluwer Academic publishers, Boston, USA (1999) (1999)
Brandes EA, Brook GB, Smithells Metals Reference Book, 7th ed., p.6-6, Butterworth-Heinemann Ltd., London, England, (1992) (1992)
Lai CH, Anthony TC, Iwamura E, White RL, IEEE Trans. Magn., 32, 3419 (1996)
Anderson GW, Pakala M, Huai Y, IEEE Trans. Magn., 36(5), 2605 (2000)
Iwasaki H, Saito AT, Tsutai A, Sahashi M, IEEE Trans. Magn., 33(5), 2875 (1997)
Maesaka A, Sugawara N, Okabe A, Itabashi M, J. Appl. Phys., 83(12), 7628 (1998)
Takiguchi M, Ishii S, Makino E, Okabe A, J. Appl. Phys, 87(12), 2469 (2000)
Maesaka A, Ishii S, Okabe A, J. Appl. Phys., 88(12), 3982 (2000)
Lee CG, Kim BS, Fukamichi K, IEEE Trans. Magn., 33(5), 2928 (1997)
Arkhipora NK, Klotsman SM, Polikarpova IP, Timofeev AN, Shepatkovskii P, Fiz. Met. metalloved., 62, 1882 (1986)
Iijima Y, Taguchi O, Hirano K, Met. Trans., 8A, 991 (1977)
Han DH, Zhu JG, Judy JH, J. Appl. Phys., 81(8), 4996 (1997)

[Referenced By]

[1] Malozemoff AP, Phys. Rev. B, 35, 3679 (1987)

[2] Malozemoff AP, J. Appl. Phys., 63(8), 3874 (1988)

[3] Baibich MN, Broto JM, Fert A, Nguyen Van Dau F, Petroff F, Etienne P, Creuzet G, Friederich A, Chazelas J, Phys. Rev. Lett., 61(21), 2472 (1988)

[4] Anderson G, Huai Y, Miloslawsky L, J. Appl. Phys., 87(9), 6989 (2000)

[5] Kools JCS, IEEE Trans. Magn., 32(4), 3165 (1996)

[6] Xu M, Lu Z, Yang T, Liu C, Cui S, Mai Z, Lai W, Jia Q, Zheng W, J. Appl. Phys., 92(4), 2052 (2002)

[7] Lin T, Mauri D, Staud N, Hwang C, Gorman GL, Appl. Phys. Lett., 65(9), 1183 (1994)

[8] Fuke HN, Saito K, Kamiguchi Y, Iwasaki H, Sahashi M, J. Appl. Phys., 81(8), 4004 (1997)

[9] Van Driel J, Coehoom R, Lenssen KMH, Kuiper AET, De Boer FR, J. Appl. Phys., 85(8), 5522 (1999)

[10] Schulthess TC, Butler WH, J. Appl. Phys., 85(8), 5510 (1999)

[11] Goldman A, Hanbook of Madern Ferromagnetic Materials, p.57, Kluwer Academic publishers, Boston, USA (1999) (1999)

[12] Brandes EA, Brook GB, Smithells Metals Reference Book, 7th ed., p.6-6, Butterworth-Heinemann Ltd., London, England, (1992) (1992)

[13] Lai CH, Anthony TC, Iwamura E, White RL, IEEE Trans. Magn., 32, 3419 (1996)

[14] Anderson GW, Pakala M, Huai Y, IEEE Trans. Magn., 36(5), 2605 (2000)

[15] Iwasaki H, Saito AT, Tsutai A, Sahashi M, IEEE Trans. Magn., 33(5), 2875 (1997)

[16] Maesaka A, Sugawara N, Okabe A, Itabashi M, J. Appl. Phys., 83(12), 7628 (1998)

[17] Takiguchi M, Ishii S, Makino E, Okabe A, J. Appl. Phys, 87(12), 2469 (2000)

[18] Maesaka A, Ishii S, Okabe A, J. Appl. Phys., 88(12), 3982 (2000)

[19] Lee CG, Kim BS, Fukamichi K, IEEE Trans. Magn., 33(5), 2928 (1997)

[20] Arkhipora NK, Klotsman SM, Polikarpova IP, Timofeev AN, Shepatkovskii P, Fiz. Met. metalloved., 62, 1882 (1986)

[21] Iijima Y, Taguchi O, Hirano K, Met. Trans., 8A, 991 (1977)

[22] Han DH, Zhu JG, Judy JH, J. Appl. Phys., 81(8), 4996 (1997)