Mosaic anisotropy model for magnetic interactions in mesostructured crystals

被引：5

作者：

Goldman, Abby R. ^{[1
]}

Asenath-Smith, Emily ^{[2
]}

Estroff, Lara A. ^{[1
,3
]}

机构：

[1] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA

[2] US Army Engn Res & Dev Ctr ERDC, CRREL, Hanover, NH 03755 USA

[3] Cornell Univ, Kavli Inst, Cornell Nanoscale Sci, Ithaca, NY 14853 USA

来源：

APL MATERIALS | 2017年 / 5卷 / 10期

基金：

美国国家科学基金会;

关键词：

MORIN TRANSITION; HEMATITE PARTICLES; ALPHA-FE2O3; PARTICLES; ELECTRON-MICROSCOPY; PERMANENT-MAGNETS; ENERGY PRODUCT; AMINO-ACIDS; FIELD; SIZE; GROWTH;

D O I：

10.1063/1.5007794

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We propose a new model for interpreting the magnetic interactions in crystals with mosaic texture called the mosaic anisotropy (MA) model. We test the MA model using hematite as a model system, comparing mosaic crystals to polycrystals, single crystal nanoparticles, and bulk single crystals. Vibrating sample magnetometry confirms the hypothesis of the MA model that mosaic crystals have larger remanence (M-r/M-s) and coercivity (H-c) compared to polycrystalline or bulk single crystals. By exploring the magnetic properties of mesostructured crystalline materials, we may be able to develop new routes to engineering harder magnets. (C) 2017 Author(s).

引用

页数：9

共 78 条

[1] Magnetic field-induced assembly of oriented superlattices from maghemite nanocubes [J].

Ahniyaz, Anwar ;

Sakamoto, Yasuhiro ;

Bergstrom, Lennart .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2007, 104 (45) :17570-17574

[2] RANDOM ANISOTROPY IN AMORPHOUS FERROMAGNETS [J].

ALBEN, R ;

BECKER, JJ ;

CHI, MC .

JOURNAL OF APPLIED PHYSICS, 1978, 49 (03) :1653-1658

[3] MAGNETIC ANISOTROPY IN ANTIFERROMAGNETIC CORUNDUM-TYPE SESQUIOXIDES [J].

ARTMAN, JO ;

MURPHY, JC ;

FONER, S .

PHYSICAL REVIEW, 1965, 138 (3A) :A912-&

[4] Hierarchically Structured Hematite Architectures Achieved by Growth in a Silica Hydrogel [J].

Asenath-Smith, Emily ;

Hovden, Robert ;

Kourkoutis, Lena F. ;

Estroff, Lara A. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2015, 137 (15) :5184-5192

[5] Sectioning of Individual Hematite Pseudocubes with Focused Ion Beam Enables Quantitative Structural Characterization at Nanometer Length Scales [J].

Asenath-Smith, Emily ;

Estroff, Lara A. .

MICROSCOPY AND MICROANALYSIS, 2014, 20 (02) :635-644

[6] NEW GRAIN SIZE LIMITS FOR PALAEOMAGNETIC STABILITY IN HAEMATITE [J].

BANERJEE, SK .

NATURE-PHYSICAL SCIENCE, 1971, 232 (27) :15-&

[7] The Morin transition in nanostructured pseudocubic hematite: Effect of the intercrystallite magnetic exchange [J].

Bengoa, J. F. ;

Alvarez, A. M. ;

Bianchi, A. E. ;

Punte, G. ;

Vandenberghe, R. E. ;

Mercader, R. C. ;

Marchetti, S. G. .

MATERIALS CHEMISTRY AND PHYSICS, 2010, 123 (01) :191-198

[8] MAGNETOCRYSTALLINE ANISOTROPY OF PURE AND DOPED HEMATITE [J].

BESSER, PJ ;

MORRISH, AH ;

SEARLE, CW .

PHYSICAL REVIEW, 1967, 153 (02) :632-&

[9] Bio-Inspired Band Gap Engineering of Zinc Oxide by Intracrystalline Incorporation of Amino Acids [J].

Brif, Anastasia ;

Ankonina, Guy ;

Drathen, Christina ;

Pokroy, Boaz .

ADVANCED MATERIALS, 2014, 26 (03) :477-481

[10] Effect of grain alignment on magnetic structure in nanoscale material [J].

Crew, DC ;

Lewis, LH .

IEEE TRANSACTIONS ON MAGNETICS, 2001, 37 (04) :2512-2514

← 1 2 3 4 5 6 7 8 →