Microstructure and magnetic properties of CoCr thin films formed on Ge layer

作者: M. Futamoto , Y. Honda , H. Kakibayashi , K. Yoshida

DOI: 10.1109/TMAG.1985.1064012

关键词: Materials scienceNucleationAlloyLayer (electronics)OpticsThin filmTransmission electron microscopyMicrostructureAlloy depositionComposite materialCrystal

摘要: To improve the c-axis oriented columnar growth, nucleation of CoCr crystals on various underlayers which are formed substrates prior to alloy deposition is studied. Microstructures vacuum deposited films examined by transmission electron microscopy (TEM). It found that an amorphous-like Ge a suitable underlayer material prepare highly films. Cross-sectional TEM study indicates film layer consists pillarlike grown vertically throughout thickness. The has large perpendicular magnetic anisotropy. read-write (R/W) characteristics have been markedly improved using and very high recording density D 50 =230 kFCI achieved, role crystal discussed.

参考文章(10)
S. Iwasaki, Perpendicular magnetic recording IEEE Transactions on Magnetics. ,vol. 16, pp. 71- 76 ,(1980) , 10.1109/TMAG.1980.1060546
F. Evangelisti, M. Garozzo, G. Conte, Structure of vapor‐deposited Ge films as a function of substrate temperature Journal of Applied Physics. ,vol. 53, pp. 7390- 7396 ,(1982) , 10.1063/1.330107
H. Gill, T. Yamashita, The growth characteristics of ion-beam sputtered CoCr films on Ta isolation layers IEEE Transactions on Magnetics. ,vol. 20, pp. 776- 778 ,(1984) , 10.1109/TMAG.1984.1063377
Tu Chen, G. B. Charlan, Tom Yamashita, A comparison of the uniaxial anisotropy in sputtered Co–Re and Co–Cr perpendicular recording media Journal of Applied Physics. ,vol. 54, pp. 5103- 5111 ,(1983) , 10.1063/1.332731
J.C. Lodder, T. Wielinga, J. Worst, R.f.-sputtered Co-Cr layers for perpendicular magnetic recording I: Structural properties Thin Solid Films. ,vol. 101, pp. 61- 73 ,(1983) , 10.1016/0040-6090(83)90493-5
Norman A. Blum, Charles Feldman, The crystallization of amorphous silicon films Journal of Non-Crystalline Solids. ,vol. 11, pp. 242- 246 ,(1972) , 10.1016/0022-3093(72)90006-3
E. A. Stern, C. E. Bouldin, B. von Roedern, J. Azoulay, Incipient amorphous-to-crystalline transition in Ge Physical Review B. ,vol. 27, pp. 6557- 6560 ,(1983) , 10.1103/PHYSREVB.27.6557
H.S. Gill, M.P. Rosenblum, Magnetic and structural characteristics of ion beam sputter deposited Co-Cr thin films IEEE Transactions on Magnetics. ,vol. 19, pp. 1644- 1646 ,(1983) , 10.1109/TMAG.1983.1062737
S. Iwasaki, K. Ouchi, Co-Cr recording films with perpendicular magnetic anisotropy IEEE Transactions on Magnetics. ,vol. 14, pp. 849- 851 ,(1978) , 10.1109/TMAG.1978.1059928