Ultrahigh-frequency ferromagnetic properties of FeCoHf films deposited by gradient sputtering

被引：144

作者：

Li, Shandong ^{[1
]}

Huang, Zhigao ^{[1
]}

Duh, Jenq-Gong ^{[2
]}

Yamaguchi, Masahiro ^{[3
]}

机构：

[1] Fujian Normal Univ, Dept Phys, Fuzhou 350007, Peoples R China

[2] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan

[3] Tohoku Univ, Elect Commun Res Inst, Sendai, Miyagi 9808577, Japan

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 09期

关键词：

D O I：

10.1063/1.2889447

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nanocrystalline FeCoHf films with Hf composition gradient were prepared by gradient sputtering method at room temperature. A uniaxial magnetic anisotropy with high anisotropy field H-k up to 547 Oe was achieved after magnetic annealing with external field along the gradient direction. Ultrahigh ferromagnetic resonance frequency over 7 GHz was obtained in magnetic annealed gradient sputtered films. The origin of ultrahigh ferromagnetic properties in gradient sputtered films is discussed. (C) 2008 American Institute of Physics.

引用

页数：3

共 27 条

[1] Co-Fe metal/native-oxide multilayers: A new direction in soft magnetic thin film design I. Quasi-static properties and dynamic response [J].

Beach, GSD ;

Berkowitz, AE .

IEEE TRANSACTIONS ON MAGNETICS, 2005, 41 (06) :2043-2052

[2] Controlling the induced anisotropy in soft magnetic films for high-frequency applications [J].

Chezan, AR ;

Craus, CB ;

Chechenin, NG ;

Vystavel, T ;

De Hosson, JTM ;

Niesen, L ;

Boerma, DO .

IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (05) :3144-3146

[3] Structural and magnetic properties of oxide films CoFeHfO: A possible candidate for all-oxide TMR junctions? [J].

Esseling, M ;

Luo, Y ;

Samwer, K .

EUROPHYSICS LETTERS, 2004, 68 (01) :100-105

[4] Soft ferromagnetic thin films for high frequency applications [J].

Fergen, I ;

Seemann, K ;

von der Weth, A ;

Schüppen, A .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 242 (242-245) :146-151

[5] Novel nanostructure and magnetic properties of Co-Fe-Hf-O films [J].

Ha, Nguyen Duy ;

Phan, Manh-Huong ;

Kim, Chong Oh .

NANOTECHNOLOGY, 2007, 18 (15)

[6] High resistive nanocrystalline Fe-M-O (M=Hf, Zr, rare-earth metals) soft magnetic films for high-frequency applications [J].

Hayakawa, Y ;

Makino, A ;

Fujimori, H ;

Inoue, A .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :3747-3752

[7] GRAIN-SIZE DEPENDENCE OF COERCIVITY AND PERMEABILITY IN NANOCRYSTALLINE FERROMAGNETS [J].

HERZER, G .

IEEE TRANSACTIONS ON MAGNETICS, 1990, 26 (05) :1397-1402

[8] Thin-film inductor for gigahertz band with CoFeSiO-SiO2 multilayer granular films and its application for power amplifier module [J].

Ikeda, K ;

Kobayashi, K ;

Ohta, K ;

Kondo, R ;

Suzuki, I ;

Fujimoto, A .

IEEE TRANSACTIONS ON MAGNETICS, 2003, 39 (05) :3057-3061

[9] Sputtered FeCoN soft magnetic thin films with high resistivity [J].

Jiang, H ;

Chen, YJ ;

Lian, GD .

IEEE TRANSACTIONS ON MAGNETICS, 2003, 39 (06) :3559-3562

[10] High-frequency ferromagnetic properties of as-deposited FeCoZr films with uniaxial magnetic anisotropy [J].

Li, Shandong ;

Yuan, Zuanru ;

Duh, Jenq-Gong .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2008, 41 (05)

← 1 2 3 →