Structural and magnetic properties of single-crystalline Co-doped barium titanate nanoparticles |
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Authors: | Hongxue Liu Baobao Cao Charles J O’Connor |
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Institution: | Advanced Materials Research Institute, University of New Orleans, New Orleans, LA 70148, USA |
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Abstract: | Undoped and Co-doped BaTiO3 nanoparticles were synthesized by a one-step sol-precipitation method. For all the samples, X-ray diffraction showed characteristic diffraction lines for BaTiO3 without the indication of secondary phases. High-resolution transition electron microscopy images showed that BaTiO3 nanoparticles exhibit the nature of single-crystal. Magnetometry revealed that all the Co-doped BaTiO3 samples show paramagnetic behaviors and Co ions in BaTiO3 are present as isolated paramagnetic centers. This is contrasted to several reported cases of ferromagnetism in Co-doped BaTiO3. |
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Keywords: | 75 75 +a 81 07 Bc 77 84 &minus s 75 20 &minus g |
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