Title :
Magnetic properties of N and (Cr, N)-doped TiO2 nanoparticles
Author :
Larumbe, S. ; Gomez-Polo, C.
Author_Institution :
Univ. Publica de Navarra, Pamplona, Spain
Abstract :
This article aims to analyze the effect of nitrogen and chromium codoping on the ferromagnetic behavior of TiO2 nanoparticles. The nanoparticles are synthesized by sol-gel method using titanium tetraisopropoxide (TTIP) as metallic precursor. Inductively coupled plasma atomic emission spectrometry is employed to determine dopant concentration and the existence of ferromagnetic impurities. X-ray diffraction and SQUID magnetometry are used to characterize the crystallographic structure and magnetic behaviors of the nanoparticles. Magnetization and exchange interaction properties of the nanoparticles are determined.
Keywords :
X-ray diffraction; atomic emission spectroscopy; chromium; crystal structure; doping profiles; exchange interactions (electron); ferromagnetic materials; magnetic impurities; magnetic particles; magnetisation; magnetometry; nanofabrication; nanomagnetics; nanoparticles; nitrogen; semiconductor doping; semiconductor growth; semimagnetic semiconductors; sol-gel processing; titanium compounds; SQUID magnetometry; TiO2:Cr,N; X-ray diffraction; codoping; crystallographic structure; dopant concentration; exchange interaction; ferromagnetic impurities; inductively coupled plasma atomic emission spectrometry; magnetization; metallic precursor; nanoparticles; sol-gel method; titanium tetraisopropoxide; Chromium; Impurities; Iron; Magnetic hysteresis; Magnetization; Nanoparticles; Nitrogen;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7157442
