Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 322, Issue 7, Pages 790-793Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2009.11.004
Keywords
Co doping; Barium titanate; Magnetic properties
Funding
- DARPA [HR0011-07-1-0031]
- Louisiana Board of Regents [LEQSF (2007-12)-ENH-PKSFI-PRS-04]
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Undoped and Co-doped BaTiO(3) nanoparticles were synthesized by a one-step sol-precipitation method. For all the samples, X-ray diffraction showed characteristic diffraction lines for BaTiO(3) without the indication of secondary phases. High-resolution transition electron microscopy images showed that BaTiO(3) nanoparticles exhibit the nature of single-crystal. Magnetometry revealed that all the Co-doped BaTiO(3) samples show paramagnetic behaviors and Co ions in BaTiO(3) are present as isolated paramagnetic centers. This is contrasted to several reported cases of ferromagnetism in Co-doped BaTiO(3). (C) 2009 Elsevier B.V. All rights reserved.
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