Shape and magnetic properties of single-crystalline hematite (α-Fe2O3) nanocrystals

被引：104

作者：

Cao, Huaqiang ^{[1
]}

Wang, Guozhi ^{[1
]}

Zhang, Lei ^{[1
]}

Liang, Yu ^{[1
]}

Zhang, Sichun ^{[1
]}

Zhang, Xinrong ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

来源：

CHEMPHYSCHEM | 2006年 / 7卷 / 09期

关键词：

magnetic properties; nanocrystals; Raman spectroscopy; transmission electron microscopy; X-ray diffraction;

D O I：

10.1002/cphc.200600130

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Unusual magnetic behavior of α-Fe2O3: Rice- (a) and cube-shaped (b) single-crystalline α-Fe2O3 nanostructures (see microstructure images) are obtained by a new hydrothermal reaction route. Different magnetic anisotropies are observed for the rice- and cube-shaped α-Fe2O3 nanocrystals. This behavior offers possibilities for technological applications of α-Fe 2O3 with magnetic properties tailored by shape-controlled synthesis. (Figure Presented). © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：1897 / 1901

页数：5

共 47 条

[31] Sonochemistry under an applied magnetic field: Determining the shape of a magnetic particle [J].

Prozorov, T ;

Prozorov, R ;

Koltypin, Y ;

Felner, I ;

Gedanken, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (50) :10165-10168

[32] Three-dimensional binary superlattices of magnetic nanocrystals and semiconductor quantum dots [J].

Redl, FX ;

Cho, KS ;

Murray, CB ;

O'Brien, S .

NATURE, 2003, 423 (6943) :968-971

[33]

ROSENSWEIG RE, 1985, FERROHYDROGYNAMICS

[34] Microstructural and magnetic studies on hydrothermally prepared hematite [J].

Sahu, KK ;

Rath, C ;

Mishra, NC ;

Anand, S ;

Das, RP .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1997, 185 (02) :402-410

[35] Nanomagnetics [J].

Skomski, R .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2003, 15 (20) :R841-R896

[36] Powering an inorganic nanodevice with a biomolecular motor [J].

Soong, RK ;

Bachand, GD ;

Neves, HP ;

Olkhovets, AG ;

Craighead, HG ;

Montemagno, CD .

SCIENCE, 2000, 290 (5496) :1555-1558

[37] PREPARATION OF MONODISPERSED COLLOIDAL PARTICLES [J].

SUGIMOTO, T .

ADVANCES IN COLLOID AND INTERFACE SCIENCE, 1987, 28 (01) :65-108

[38]

Sun, 2005, ANGEW CHEM, V117, P4269, DOI 10.1002/ange.200500448

[39] Shape-controlled synthesis of gold and silver nanoparticles [J].

Sun, YG ;

Xia, YN .

SCIENCE, 2002, 298 (5601) :2176-2179

[40] A highly efficient chemical sensor material for H2S:: α-Fe2O3 nanotubes fabricated using carbon nanotube templates [J].

Sun, ZY ;

Yuan, HQ ;

Liu, ZM ;

Han, BX ;

Zhang, XR .

ADVANCED MATERIALS, 2005, 17 (24) :2993-+

← 1 2 3 4 5 →