Structure and Isotropic High-Frequency Response of Co-HfN Nanogranular Films

被引：4
作者：
Cao, Yang [1 ]
Zhang, Yiwen [1 ]
Ohnuma, Shigehiro [1 ,2 ]
Kobayashi, Nobukiyo [2 ]
Masumoto, Hiroshi [1 ]
机构：
[1] Tohoku Univ, Frontier Res Inst Interdisciplinary Sci, Sendai, Miyagi 9808578, Japan
[2] DENJIKEN, Res Inst Electromagnet Mat, Sendai, Miyagi 9820827, Japan
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2015年 / 51卷 / 11期
关键词：
Cobalt alloys; frequency response; perpendicular magnetic ansotropy; soft magnetic materials; SOFT-MAGNETIC PROPERTIES; GRANULAR THIN-FILMS; FINE PARTICLES; DENSITY; FIELD;
D O I：
10.1109/TMAG.2015.2438003
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：
The Co-HfN nanogranular films with different Co content were deposited, to obtain high-frequency soft magnetic properties. The films exhibit perpendicular magnetic anisotropy over a wide composition range. The coercivity is similar to 15-75 Oe, which is attributed to the growth-induced Co columnar structure. Both hysteresis loops and magnetic force microscopy images demonstrate that the films are magnetically in-plane isotropic. The permeability and ferromagnetic resonance frequency of the Co58Hf14N28 films are 40 and 2 GHz, respectively, which is consistent with the theoretical calculation based on Landau-Lifshitz-Gilbert (L.L.G) equation. The films consist of crystallized Co nanogranules and amorphous HfN matrix.
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页数：4
相关论文
共 22 条
  • [1] MAGNETO-OPTICAL EFFECT AND EFFECTIVE DIELECTRIC TENSOR IN COMPOSITE-MATERIAL CONTAINING MAGNETIC FINE PARTICLES OR THIN-LAYERS
    ABE, M
    GOMI, M
    [J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1984, 23 (12): : 1580 - 1585
  • [2] Finite-size effects in fine particles: magnetic and transport properties
    Batlle, X
    Labarta, A
    [J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2002, 35 (06) : R15 - R42
  • [3] Cullity B. D., 1972, INTRO MAGNETIC MAT
  • [4] TUNNEL-TYPE GMR IN METAL-NONMETAL GRANULAR ALLOY THIN-FILMS
    FUJIMORI, H
    MITANI, S
    OHNUMA, S
    [J]. MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 1995, 31 (1-2): : 219 - 223
  • [5] NANOCRYSTALLINE SOFT MAGNETIC-MATERIALS
    HERZER, G
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1992, 112 (1-3) : 258 - 262
  • [6] Herzer G., 1992, Nanostructured Materials, V1, P263, DOI 10.1016/0965-9773(92)90106-8
  • [7] Hosono A., 1988, J MAGN SOC JPN, V12, P295
  • [8] High Frequency Soft Magnetic Performance on Magnetically Isotropic Co-Al-N Films in External Bias Field
    Kijima, H.
    Zhang, Y.
    Kobayashi, N.
    Ohnuma, S.
    Masumoto, H.
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 2012, 48 (11) : 2910 - 2913
  • [9] Enhancement of low-field-magnetoresistive response of tunnel-type magnetoresistance in metal-nonmetal granular thin films
    Kobayashi, N
    Ohnuma, S
    Murakami, S
    Masumoto, T
    Mitani, S
    Fujimori, H
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 188 (1-2) : 30 - 34
  • [10] Giant dielectric and magnetoelectric responses in insulating nanogranular films at room temperature
    Kobayashi, Nobukiyo
    Masumoto, Hiroshi
    Takahashi, Saburo
    Maekawa, Sadamichi
    [J]. NATURE COMMUNICATIONS, 2014, 5
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