Crystalline ZrO2 doping induced columnar structural FePt films with larger coercivity and high aspect ratio

被引：12

作者：

Dong, K. F. ^{[1
]}

Li, H. H. ^{[1
]}

Deng, J. Y. ^{[1
]}

Peng, Y. G. ^{[2
]}

Ju, G. ^{[2
]}

Chow, G. M. ^{[1
]}

Chen, J. S. ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117576, Singapore

[2] Seagate Technol, Fremont, CA 94538 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2015年 / 117卷 / 17期

关键词：

Semiconductor doping - Carbon films - Grain boundaries - Coercive force - Aspect ratio - Binary alloys - Zirconia;

D O I：

10.1063/1.4913897

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Columnar (001) FePt-ZrO2-C films with large coercivity, small grain size, and high aspect ratio were obtained. By doping ZrO2 into FePt film at high sputtering temperature, tetragonal (002) textured ZrO2 was formed and distributed at the grain boundaries of FePt grains, resulting in the formation of columnar structured FePt films. The perpendicular anisotropy of FePt films was degraded since some (200) FePt grains were formed directly on the (002) textured ZrO2. With a small amount of carbon doping into FePt-ZrO2 35 vol.% films, the perpendicular anisotropy was improved. However, FePt grains were still interconnected. Upon further increasing concentration of ZrO2, (001) textured FePt-ZrO2 40 vol.%-C 5 vol.% films with well isolated grains in average diameter of 5.5 nm and very good columnar structure were obtained. (c) 2015 AIP Publishing LLC.

引用

页数：4

共 11 条

[1] Low temperature deposited L10 FePt-C (001) films with high coercivity and small grain size [J].

Chen, J. S. ;

Lim, B. C. ;

Hu, J. F. ;

Liu, B. ;

Chow, G. M. ;

Ju, G. .

APPLIED PHYSICS LETTERS, 2007, 91 (13)

[2] Granular L10 FePt-X (X=C, TiO2, Ta2O5) (001) nanocomposite films with small grain size for high density magnetic recording [J].

Chen, J. S. ;

Lim, B. C. ;

Ding, Y. F. ;

Hu, J. F. ;

Chow, G. M. ;

Ju, G. .

JOURNAL OF APPLIED PHYSICS, 2009, 105 (07)

[3] Nanogranular TiN-ZrO2 intermediate layer induced improvement of isolation and grain size of FePt thin films [J].

Dong, K. F. ;

Li, H. H. ;

Peng, Y. G. ;

Ju, G. ;

Chow, G. M. ;

Chen, J. S. .

SCIENTIFIC REPORTS, 2014, 4

[4] L10 FePt-ZrO2 (001) nanostructured films with high aspect ratio columnar grains [J].

Dong, K. F. ;

Li, H. H. ;

Peng, Y. G. ;

Ju, G. ;

Chow, G. M. ;

Chen, J. S. .

APPLIED PHYSICS LETTERS, 2014, 104 (19)

[5] Well-isolated L10 FePt-SiNx-C nanocomposite films with large coercivity and small grain size [J].

Dong, K. F. ;

Li, H. H. ;

Peng, Y. G. ;

Ju, G. ;

Chow, G. M. ;

Chen, J. S. .

JOURNAL OF APPLIED PHYSICS, 2012, 111 (07)

[6] Granular L10 FePt (001) thin films for Heat Assisted Magnetic Recording [J].

Granz, Steven D. ;

Kryder, Mark H. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2012, 324 (03) :287-294

[7] Heat Assisted Magnetic Recording [J].

Kryder, Mark H. ;

Gage, Edward C. ;

Mcdaniel, Terry W. ;

Challener, William A. ;

Rottmayer, Robert E. ;

Ju, Ganping ;

Hsia, Yiao-Tee ;

Erden, M. Fatih .

PROCEEDINGS OF THE IEEE, 2008, 96 (11) :1810-1835

[8] Heat-assisted magnetic recording [J].

Rottmayer, Robert E. ;

Batra, Sharat ;

Buechel, Dorothea ;

Challener, William A. ;

Hohlfeld, Julius ;

Kubota, Yukiko ;

Li, Lei ;

Lu, Bin ;

Mihalcea, Christophe ;

Mountfield, Keith ;

Pelhos, Kalman ;

Peng, Chubing ;

Rausch, Tim ;

Seigler, Michael A. ;

Weller, Dieter ;

Yang, XiaoMin .

IEEE TRANSACTIONS ON MAGNETICS, 2006, 42 (10) :2417-2421

[9] Mechanism of coercivity enhancement by Ag addition in FePt-C granular films for heat assisted magnetic recording media [J].

Varaprasad, B. S. D. Ch. S. ;

Takahashi, Y. K. ;

Wang, J. ;

Ina, T. ;

Nakamura, T. ;

Ueno, W. ;

Nitta, K. ;

Uruga, T. ;

Hono, K. .

APPLIED PHYSICS LETTERS, 2014, 104 (22)

[10] L10 FePtX-Y media for heat-assisted magnetic recording [J].

Weller, Dieter ;

Mosendz, Oleksandr ;

Parker, Gregory ;

Pisana, Simone ;

Santos, Tiffany S. .

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2013, 210 (07) :1245-1260

← 1 2 →