Ordering effects of the dipolar interaction in lattices of small magnetic particles

Autor:	M. Bahiana, Patricio Vargas, J. P. Pereira Nunes, Dora Altbir, Marcelo Knobel
Rok vydání:	2004
Předmět:	Physics Condensed Matter::Materials Science Lattice constant Condensed matter physics Remanence Magnetism Stoner–Wohlfarth model Lattice plane Antiferromagnetism Magnetic nanoparticles Condensed Matter Physics Magnetic hysteresis Electronic Optical and Magnetic Materials
Zdroj:	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS Artículos CONICYT CONICYT Chile instacron:CONICYT
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2004.04.127
Popis:	The hysteresis curves of systems composed of small interacting magnetic particles, regularly placed on a two-dimensional lattice, are obtained with Monte Carlo simulations, for magnetic fields on the plane of the monolayer. The remanence as a function of temperature, in interacting systems, presents a peak that separates two different magnetic states. At low temperatures, small values of remanence are a consequence of antiferromagnetic order due to the dipolar interaction. At higher values of temperature the increase of the component normal to the lattice plane is responsible for the small values of remanence. The value of the temperature corresponding to the maximum value of remanence depends on lattice spacing and size.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c130541f9fe4fa62f82ec0f95ce27092 https://doi.org/10.1016/j.jmmm.2004.04.127 Zobrazit plný text záznamu Full Text from ScienceDirect