L10 FePt films were deposited on MgO (001) substrates heated to 700°C by magnetron sputtering.Assisted by the misfit of lattice between film and substrate,strong (001) texture was formed.The film at nominal thickness t N=5 nm was composed of nanoparticles with a size of～70 nm,and showed a high coercivity of～105 kOe at 4.2 K.At t N=～50 nm,as the film changed from discontinuous to continuous,the coercivity dropped about one order of magnitude.Micromagnetic simulation implies that the magnetization reversal is...
【英文摘要】
L10 FePt films were deposited on MgO (001) substrates heated to 700°C by magnetron sputtering.Assisted by the misfit of lattice between film and substrate,strong (001) texture was formed.The film at nominal thickness t N=5 nm was composed of nanoparticles with a size of～70 nm,and showed a high coercivity of～105 kOe at 4.2 K.At t N =～50 nm,as the film changed from discontinuous to continuous,the coercivity dropped about one order of magnitude.Micromagnetic simulation implies that the magnetization reversal i...
【基金】
supported by Chongqing Natural Science Foundation(Grant No.CSTC2009BB8102);
Southwest University Doctorial Foundation (Grant No.SWUB2006031)
【更新日期】
2010-04-08
【分类号】
TB383.1
【正文快照】
Magnetic recording media for data storage is one of themost important applications of magnetic materials due to itsnonvolatility and low cost per megabyte. In longitude mode(LMR, longitude magnetic recording), data are recorded bymagnetizing a cluster of
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