中国物理B ›› 2009, Vol. 18 ›› Issue (4): 1643-1646.doi: 10.1088/1674-1056/18/4/060

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Investigation of fabrication and hetero-epitaxy relationship of CoCrPt thin films grown on CrW underlayer

韦丹1, 李松田2, 刘曦2, 史文魁2, 曹江伟2, 魏福林2   

  1. (1)Lab of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; (2)Research Institute of Magnetic Materials, Lanzhou University, Lanzhou 730000, China
  • 收稿日期:2008-07-10 修回日期:2008-10-11 出版日期:2009-04-20 发布日期:2009-04-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10174028).

Investigation of fabrication and hetero-epitaxy relationship of CoCrPt thin films grown on CrW underlayer

Li Song-Tian(李松田)a), Liu Xi(刘曦)a), Shi Wen-Kui(史文魁)a), Cao Jiang-Wei(曹江伟)a), Wei Fu-Lin(魏福林)a)†, and Wei Dan(韦丹)b)   

  1. a Research Institute of Magnetic Materials, Lanzhou University, Lanzhou 730000, China; b Lab of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
  • Received:2008-07-10 Revised:2008-10-11 Online:2009-04-20 Published:2009-04-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10174028).

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摘要： This paper reports that longitudinally oriented CoCrPt thin films with Cr85W15 underlayer and CoCr intermediate layer for use of giant magnetoresistance heads were fabricated by magnetron sputtering. Without CoCr intermediate layer, CoCrPt layer deposited directly on Cr85W15 underlayer which has a dominant (200) texture exhibits unexpected (10\bar {1}1) texture. After introducing CoCr intermediate layer, the CoCrPt layer shifts into (11\bar {2}0) texture. This article studies the crystallographic hetero-epitaxy relationship between magnetic layer and underlayer in order to understand the appearance of CoCrPt (10\bar {1}1) texture on (200) textured Cr underlayer and the influence of CoCr intermediate layer on the inducement of CoCrPt (11\bar {2}0) texture. The CoCr intermediate layer plays a crucial role in controlling the microstructure and consequently the magnetic properties of the overlying magnetic layer.

关键词: CoCrPt thin films, hetero-epitaxy, texture

Abstract: This paper reports that longitudinally oriented CoCrPt thin films with Cr85W15 underlayer and CoCr intermediate layer for use of giant magnetoresistance heads were fabricated by magnetron sputtering. Without CoCr intermediate layer, CoCrPt layer deposited directly on Cr85W15 underlayer which has a dominant (200) texture exhibits unexpected (10$\bar{1}$1) texture. After introducing CoCr intermediate layer, the CoCrPt layer shifts into (11$\bar{2}$0) texture. This article studies the crystallographic hetero-epitaxy relationship between magnetic layer and underlayer in order to understand the appearance of CoCrPt (10$\bar{1}$1) texture on (200) textured Cr underlayer and the influence of CoCr intermediate layer on the inducement of CoCrPt (11$\bar{2}$0) texture. The CoCr intermediate layer plays a crucial role in controlling the microstructure and consequently the magnetic properties of the overlying magnetic layer.

Key words: CoCrPt thin films, hetero-epitaxy, texture

中图分类号:  (Magnetic properties of monolayers and thin films)

  • 75.70.Ak
72.15.Gd (Galvanomagnetic and other magnetotransport effects) 81.15.Cd (Deposition by sputtering) 68.55.-a (Thin film structure and morphology) 75.47.De (Giant magnetoresistance) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)