Magnetic composites composed of iron-nitride nanograins dispersed in a silver matrix

被引：16

作者：

Yamamoto, TA ^{[1
]}

Nishimaki, K ^{[1
]}

Harabe, T ^{[1
]}

Shiomi, K ^{[1
]}

Nakagawa, T ^{[1
]}

Katsura, M ^{[1
]}

机构：

[1] Osaka Univ, Dept Nucl Engn, Suita, Osaka 5650781, Japan

来源：

NANOSTRUCTURED MATERIALS | 1999年 / 12卷 / 1-4期

关键词：

D O I：

10.1016/S0965-9773(99)00174-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic nanocomposites in which iron nitride nanograins are dispersed in a silver matrix were synthesized by nitriding iron-oxide nanograins buried in the matrix. The iron nitride nanocomposite is regarded as a promising material from viewpoint of magnetic applications, since iron nitride family involves various magnetisms with large magnetic moments comparable to that of metallic iron and chemical stabilities better than those of metallic nanophase. Ferromagnetic iron nitride of gamma'-Fe4N or epsilon-Fe2-4N was selectively obtained in the silver matrix by controlling the nitriding potential during the reaction with ammonia gas streams with various flow conditions. The composites were characterized with XRD, TEM and the magnetic properties were studied by a SQUID magnetometer. (C) 1999 Acta Metallurgica Inc.

引用

页码：523 / 526

页数：4

共 9 条

[1]

BEAN CP, 1959, J APPL PHYS, V30, pS120, DOI [DOI 10.1063/1.2185850, DOI 10.1063/1.1735100]

[2] MAGNETIC STRUCTURE OF FE4N [J].

FRAZER, BC .

PHYSICAL REVIEW, 1958, 112 (03) :751-754

[3] MAGNETISM ON A MICROSCOPIC SCALE [J].

KRISHNAN, KM .

MRS BULLETIN, 1995, 20 (10) :24-28

[4] Magnetic nanoparticles and magnetocrystalline anisotropy [J].

Majetich, SA ;

Scott, JH ;

Kirkpatrick, EM ;

Chowdary, K ;

Gallagher, K ;

McHenry, ME .

NANOSTRUCTURED MATERIALS, 1997, 9 (1-8) :291-300

[5] MAGNETIC STUDY ON HEXAGONAL NITRIDES OF 3D TRANSITION-METALS [J].

MEKATA, M ;

TAKAKI, H ;

YOSHIMURA, H .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1972, 33 (01) :62-+

[6]

NISHIMAKI K, NANOSTRUCTURED MAT

[7] Phase identification of a superparamagnetic iron-oxide/silver nanocomposite [J].

Yamamoto, T ;

Croft, MC ;

Shull, RD ;

Hahn, HW .

NANOSTRUCTURED MATERIALS, 1995, 6 (5-8) :965-968

[8] SUPERPARAMAGNETIC NANOCOMPOSITE OF SILVER IRON-OXIDE BY INERT-GAS CONDENSATION [J].

YAMAMOTO, T ;

SHULL, RD ;

BANDARU, PR ;

COSANDEY, F ;

HAHN, HW .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1994, 33 (9B) :L1301-L1303

[9] Magnetization of iron-oxide/silver nanocomposite by inert gas condensation [J].

Yamamoto, TA ;

Shull, RD ;

Hahn, HW .

NANOSTRUCTURED MATERIALS, 1997, 9 (1-8) :539-542

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