MAGNETIC HYSTERESIS AND ROTATIONAL ENERGY BARRIERS IN C-COATED CO AND RE/TM FINE-PARTICLE FERROMAGNETS

被引：5

作者：

MCHENRY, ME

BRUNSMAN, EM

MAJETICH, SA

机构：

[1] Carnegie Mellon University

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1995年 / 31卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1109/20.489772

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：

We use a Kratschmer-Huffman C-arc method to synthesize C-coated transition metal (TM) and rare earth (RE)-TM nanocrystals. The them of this research is C-arc synthesis of magnetic materials and assessment of potential use in xerography, ferrofluids, data storage, MRI Image enhancement, etc, Here we focus on materials with potential for data storage. TM particles include Co[C]. Sm1-x-yCoXCy nanocrystals have been produced using a Sm2Co7 precursor, as have nanocrystalline Fe1-x-y-zNdXByCz using Fe14Nd2B. Characterization by XRD and HRTEM identify and phases and particle sizes. SQUID magnetometry is used to determine magnetic hysteretis, temperature, and time dependent response.

引用

页码：3787 / 3789

页数：3

共 3 条

[1]

BRUNSMAN E, 1994, FAL MRS P PRESS

[2] MAGNETIC-PROPERTIES OF CARBON-COATED, FERROMAGNETIC NANOPARTICLES PRODUCED BY A CARBON-ARC METHOD [J].

BRUNSMAN, EM ;

SUTTON, R ;

BORTZ, E ;

KIRKPATRICK, S ;

MIDELFORT, K ;

WILLIAMS, J ;

SMITH, P ;

MCHENRY, ME ;

MAJETICH, SA ;

ARTMAN, JO ;

DEGRAEF, M ;

STALEY, SW .

JOURNAL OF APPLIED PHYSICS, 1994, 75 (10) :5882-5884

[3] SUPERPARAMAGNETISM IN CARBON-COATED CO PARTICLES PRODUCED BY THE KRATSCHMER CARBON-ARC PROCESS [J].

MCHENRY, ME ;

MAJETICH, SA ;

ARTMAN, JO ;

DEGRAEF, M ;

STALEY, SW .

PHYSICAL REVIEW B, 1994, 49 (16) :11358-11363

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