Please use this identifier to cite or link to this item:
http://essuir.sumdu.edu.ua/handle/123456789/27781
Or use following links to share this resource in social networks:
Tweet
Recommend this item
Title | The Role of Interactions in Systems of Single Domain Ferrimagnetic Iron Oxide Nanoparticles |
Authors |
Dutz, Silvio
Hergt, Rudolf |
ORCID | |
Keywords |
Magnetic interactions Packing density Coercivity Magnetic nanoparticles Magnetite |
Type | Article |
Date of Issue | 2012 |
URI | http://essuir.sumdu.edu.ua/handle/123456789/27781 |
Publisher | Сумський державний університет |
License | Copyright not evaluated |
Citation | Silvio Dutz, Rudolf Hergt, J. Nano-Electron. Phys. 4 No 2, 02010 (2012) |
Abstract |
Magnetic nanoparticles are interesting materials for a lot of medical and technical applications. A less experimentally investigated question is the influence of particle packing density on magnetic properties due to magnetic interactions between single particles. For this, magnetic nanoparticles of iron oxides prepared as fine dry powder by laser deposition are investigated with respect to their structural and magnetic properties as function of packing density. The particles are nearly spherically shaped single crystals in the magnetic single domain size range with a mean diameter of 21 nm occasionally exhibiting spinel growth facets. Powders of these particles are diluted by nonmagnetic silicon oxide particles in a range of volume concentrations from 0.2 % up to 68 % of the bulk density of magnetite. The concentration dependence of remanence, coercivity and hysteresis losses is determined by measurements of minor loops in a vibrating sample magnetometer. Results which are discussed in the frame of present theoretical models may be understood in terms of the cubic anisotropy of magnetite distorted by a small uniaxial shape contribution.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/27781 |
Appears in Collections: |
Журнал нано- та електронної фізики (Journal of nano- and electronic physics) |
Views

1

-1018271305

1

1

1376537421

-1294279940

-1570288573

452917859

1

1281462209

2071735316

1

-1395501228

7241687

2

42654

4

-840644649

1

1

1

1

1

3

16

1804429745

1302168718

43807694

219846

215773

-840644644

1381318775
Downloads

1

1

-1951626364

1

1376537421

905835718

1

1

7241685

2

-840644647

1

3

1

91391

1

6

1

1

147717

167899

-840644643

1381318775
Files
File | Size | Format | Downloads |
---|---|---|---|
jnep_2012_V4_02010.pdf | 250.66 kB | Adobe PDF | 38424973 |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.