Fabrication of SmCox nanoparticles as a potential candidate of materials for super-high-density magnetic memory:: Use of gold as the third element

被引：21

作者：

Matsushita, Toru

Masuda, Junya

Iwamoto, Takashi

Toshima, Naoki ^{[1
]}

机构：

[1] Tokyo Univ Sci, Dept Mat Sci & Environm Engn, Yamaguchi 7560884, Japan

[2] Tokyo Univ Sci, Grad Sch Sci & Engn, Yamaguchi 7560884, Japan

[3] Tokyo Inst Technol, Dept Innovat & Engn Mat, Midori Ku, Yokohama, Kanagawa 2268502, Japan

[4] Tokyo Univ Sci, Adv Mat Inst, Yamaguchi 7560884, Japan

来源：

CHEMISTRY LETTERS | 2007年 / 36卷 / 10期

关键词：

D O I：

10.1246/cl.2007.1264

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The SMCO5 magnetic nanoparticles were prepared via simultaneous reduction of Sm(acac)(3) center dot xH(2)O, Co(acac)(3), and AuCl in tetraethylene glycol (TEG) in the presence of stabilizing agents. The presence of An is considered to promote the formation of SmCox (x = 5-8.5) nanoparticles. As-prepared SmCox nanoparticles had an average diameter of 6.9 nm and a structure similar to CaCu5 crystal. Magnetic measurements of these particles exhibited a coercivity (H-c) of 1500 Oe at 300 K.

引用

收藏

页码：1264 / 1265

页数：2

相关论文

共 16 条

[1] Silver-induced enhancement of magnetic properties of CoPt3 nanoparticles [J].

Du, Xueyan ;

Inokuchi, Makoto ;

Toshima, Naoki .

CHEMISTRY LETTERS, 2006, 35 (11) :1254-1255

[2] Chemical synthesis of narrowly dispersed SmCo5 nanoparticles [J].

Gu, HW ;

Xu, B ;

Rao, JC ;

Zheng, RK ;

Zhang, XX ;

Fung, KK ;

Wong, CYC .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (10) :7589-7591

[3] Direct synthesis of fct-structured FePt nanoparticles at low temperature with assistance of poly(N-vinyl-2-pyrrolidone) [J].

Iwamoto, Takashi ;

Matsumoto, Kinya ;

Kitamoto, Yoshitaka ;

Toshima, Naoki .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2007, 308 (02) :564-567

[4] Direct synthesis of fct-FePt nanoparticles by chemical route [J].

Jeyadevan, B ;

Urakawa, K ;

Hobo, A ;

Chinnasamy, N ;

Shinoda, K ;

Tohji, K ;

Djayaprawira, DDJ ;

Tsunoda, M ;

Takahashi, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 2003, 42 (4A) :L350-L352

[5] Easy axis alignment of chemically partially ordered FePt nanoparticles [J].

Kang, SS ;

Jia, ZY ;

Shi, SF ;

Nikles, DE ;

Harrell, JW .

APPLIED PHYSICS LETTERS, 2005, 86 (06) :1-3

[6] Organometallic synthesis and magnetic properties of ferromagnetic Sm-Co nanoclusters [J].

Ono, K ;

Kakefuda, Y ;

Okuda, R ;

Ishii, Y ;

Kamimura, S ;

Kitamura, A ;

Oshima, M .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) :8480-8482

[7]

OSHIMA M, 2002, J APPL PHYS, V91, P8480

[8]

Schmid G., 1994, CLUSTERS COLLOIDS TH

[9] High anisotropy Sm-Co nanoparticles:: Preparation by cluster gun technique and their magnetic properties [J].

Stoyanov, S ;

Skumryev, V ;

Zhang, Y ;

Huang, Y ;

Hadjipanayis, G ;

Nogués, J .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (10) :7592-7594

[10] Monodisperse FePt nanoparticles and ferromagnetic FePt nanocrystal superlattices [J].

Sun, SH ;

Murray, CB ;

Weller, D ;

Folks, L ;

Moser, A .

SCIENCE, 2000, 287 (5460) :1989-1992