Microwave Magnetic Permeability of Fe 3 O 4 Nanoparticles

Autor:	Yang Yong, Zhou Dong, Wen Fu-Sheng, Li Fa-Shen, Zheng Hong, YI Hai-Bo
Rok vydání:	2009
Předmět:	Materials science Condensed matter physics Exchange interaction Analytical chemistry General Physics and Astronomy Nanoparticle equipment and supplies Condensed Matter::Materials Science Dipole Volume (thermodynamics) Volume fraction human activities Fe3o4 nanoparticles Microwave
Zdroj:	Chinese Physics Letters. 26:017501
ISSN:	1741-3540 0256-307X
DOI:	10.1088/0256-307x/26/1/017501
Popis:	Well-dispersed Fe3O4 nanoparticles are synthesized via an oxidization method with NaNO2 as oxidant. The microwave magnetic properties of the composites are studied with different volume fractions of Fe3O4 nanoparticles. It is found that a lower volume fraction corresponds to a higher magnetic resonance frequency. This could be ascribed to the enhancement of exchange interaction with a weakened dipolar interaction when the volume fraction decreases.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::096333de841c5b68db75a79b8d18f9db https://doi.org/10.1088/0256-307x/26/1/017501 Zobrazit plný text záznamu