Nanocrystalline Co-ferrite films with high perpendicular coercivity

被引:33
作者
Yin, JH
Ding, J [1 ]
Liu, BH
Miao, XS
Chen, JS
机构
[1] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 119620, Singapore
[2] Data Storage Inst, Singapore 117608, Singapore
关键词
D O I
10.1063/1.2196472
中图分类号
O59 [应用物理学];
学科分类号
摘要
Co-ferrite films were prepared using pulsed laser deposition at low substrate temperatures in this work. Magnetic properties of these films have been investigated in the function of substrate temperature and film thickness. A perpendicular coercivity as high as 12.5 kOe has been achieved in the Co-ferrite film with a thickness of 33 nm deposited at 550 degrees C. The high coercivity mechanism is possibly associated with nanocrystalline structure, textured structure, and presence of relatively large residual strain. (c) 2006 American Institute of Physics.
引用
收藏
页数:3
相关论文
共 22 条
[1]   THEORETICAL ASPECTS OF PERPENDICULAR MAGNETIC RECORDING MEDIA [J].
ANDRA, W ;
DANAN, H ;
MATTHEIS, R .
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1991, 125 (01) :9-55
[2]   Microstructure, magnetic, and magneto-optical properties of chemical synthesized Co-RE (RE=Ho, Er, Tm, Yb, Lu) ferrite nanocrystalline films [J].
Cheng, FX ;
Jia, JT ;
Xu, ZG ;
Zhou, B ;
Liao, CS ;
Yan, CH ;
Chen, LY ;
Zhao, HB .
JOURNAL OF APPLIED PHYSICS, 1999, 86 (05) :2727-2732
[3]   Unusually high coercivity and critical single-domain size of nearly monodispersed CoFe2O4 nanoparticles [J].
Chinnasamy, CN ;
Jeyadevan, B ;
Shinoda, K ;
Tohji, K ;
Djayaprawira, DJ ;
Takahashi, M ;
Joseyphus, RJ ;
Narayanasamy, A .
APPLIED PHYSICS LETTERS, 2003, 83 (14) :2862-2864
[4]  
Cullity B. D., 1972, INTRO MAGNETIC MAT, P234
[5]  
Cullity B.D., 2002, ELEMENTS XRAY DIFFRA, P401
[6]   HIGH MAGNETIC PERFORMANCE IN MECHANICALLY ALLOYED CO-SUBSTITUTED FE3O4 [J].
DING, J ;
REYNOLDS, T ;
MIAO, WF ;
MCCORMICK, PG ;
STREET, R .
APPLIED PHYSICS LETTERS, 1994, 65 (24) :3135-3136
[7]   High coercivity in SiO2-doped CoFe2O4 powders and thin films [J].
Ding, J ;
Chen, YJ ;
Shi, Y ;
Wang, S .
APPLIED PHYSICS LETTERS, 2000, 77 (22) :3621-3623
[8]   Magnetic properties of Co0.3Fe2.7O4 films with (110)texture [J].
Gu, BX ;
Zhang, HY ;
Wang, H .
JOURNAL OF MATERIALS SCIENCE LETTERS, 1997, 16 (19) :1558-1560
[9]  
*INT CTR DIFFR DAT, 1999, 221086 JCPDS INT CTR
[10]   CoFe2O4 nanostructures with high coercivity -: art. no. 10F306 [J].
Jung, JS ;
Lim, JH ;
Choi, KH ;
Oh, SL ;
Kim, YR ;
Lee, SH ;
Smith, DA ;
Stokes, KL ;
Malkinski, L ;
O'Connor, CJ .
JOURNAL OF APPLIED PHYSICS, 2005, 97 (10)