Effect of CoTiO3 formation on the magnetic properties of Co-doped TiO2 rutile
Creators
- 1. Yeungnam University, Gyeongsan (Korea, Republic of)
- 2. Busan Branch, Korea Basic Science Institute, Busan (Korea, Republic of)
Description
We studied the structural and the magnetic properties of TiO2 rutile powder with various Co concentrations synthesized by using a solid-state reaction. For Co concentrations higher that 2 %, a second phase of CoTiO3 was observed on the X-ray diffraction (XRD) experiment. The magnetization measurement showed room-temperature ferromagnetism in this material, but the magnetic moment per Co atom decreased significantly as the Co concentration was increased. We attribute this reduction of magnetization to the formation of non-magnetic CoTiO3 complexes as probed by XRD. For samples with Co concentrations less than 2 %, the observed ferromagnetism seemed to be due to an exchange interaction between substitutional or interstitial Co atoms rather than to Co clusters.
Additional details
Publishing Information
- Journal Title
- Journal of the Korean Physical Society
- Journal Volume
- 44
- Journal Issue
- 2
- Series
- 21 refs, 3 figs, 1 tab
- Journal Page Range
- p. 360-364
- ISSN
- 0374-4884
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 41071403
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- COBALT; COBALT COMPOUNDS; DOPED MATERIALS; FERROMAGNETISM; INTERSTITIALS; MAGNETIC PROPERTIES; MAGNETIZATION; RUTILE; SEMICONDUCTOR MATERIALS; TITANIUM OXIDES; X-RAY DIFFRACTION
- Descriptors DEC
- CHALCOGENIDES; COHERENT SCATTERING; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; DIFFRACTION; ELEMENTS; MAGNETISM; MATERIALS; METALS; MINERALS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; POINT DEFECTS; RADIOACTIVE MATERIALS; RADIOACTIVE MINERALS; SCATTERING; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS