Effect of FePt-C nucleation layer on magnetic properties and nanostructure for FePt-C/FePt-oxide stacked media

被引：0

作者：

Timm, Kim Kong ^{[1
]}

Saito, Takashi ^{[2
,3
]}

Kushibiki, Ryosuke ^{[1
]}

Saito, Shin ^{[2
]}

机构：

[1] TANAKA KIKINZOKU KOGYO KK, Tsukuba, Ibaraki 3004247, Japan

[2] Tohoku Univ, Grad Sch Engn, Dept Elect Engn, Sendai, Miyagi 9808579, Japan

[3] Tohoku Univ, Grad Program Spintron GP Spin, Sendai, Miyagi 9808578, Japan

来源：

2021 IEEE INTERNATIONAL MAGNETIC CONFERENCE (INTERMAG) | 2021年

关键词：

Heat assisted magnetic recording; L1(0) typed FePt; Nucleation layer; stacked media; FePt-C; FePt-oxide;

D O I：

10.1109/INTERMAG42984.2021.9580144

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Magnetic properties and nanostructure for FePt-30vol%C (2 nm) / FePt-30vol%GBM (0-8 nm) stacked media was investigated. Following effects of the employment of FePt-C nucleation layer (NL) were confirmed: 1) M-s(ave) varies linearly against melting point (T-m) with value (500-600 emu/cm(3)) smaller than that of media without NL (500-750 emu/cm(3)) due to volume average of M-s(ave) for FePt-C and FePt-GBM granular layer, 2) There is no strong correlation between grain diameter (GD) and degree of ordering (S-in(film))of the stacked media with T-m of the GBM, 3) K-u perpendicular to(film) dependence on S-in(film) for media with NL shows similar behavior with that of without NL, 4) for media with the same total thickness, the smaller I-110(inplane) for media with NL than that of without NL reveals that disorder portion in the media with NL increases, 5) the improvement of linearity in I-110(inplane) for media with NL against total thickness suggests that the homogeneity of the media with is improved, 6) reduction of I-001(inplane) from XRD in-plane profile, reflected in l(40)(sat) from the torque curve which suggests the reduction of the ratio of FePt grains with their c-axes parallel to the film plane. Further effort would be required to completely exclude the in-plane component.

引用

页数：5