Feb, 2013
High-pressure synthesis, crystal structure and magnetic property of ilmenite-type FeGeO3
JOURNAL OF SOLID STATE CHEMISTRY
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- Volume
- 198
- Number
- First page
- 520
- Last page
- 524
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1016/j.jssc.2012.11.020
- Publisher
- ACADEMIC PRESS INC ELSEVIER SCIENCE
We synthesized well-crystallized ilmenite-type FeGeO3 to investigate its structural and magnetic properties. Ilmenite-type FeGeO3 were synthesized by high-pressure synthesis technique using a Kawai-type multi-anvil apparatus. Their structural and magnetic properties were examined by XRD analysis with Rietveld refinement, transmission electron microscopy, Mossbauer spectroscopy and SQUID-magnetization measurements. The subsequent annealing after the high-pressure synthesis was effective to improve the crystallinity of the ilmenite-type FeGeO3. The primary particle size of ilmenitetype FeGeO3 was similar to 15 nm. Some particles seemed to be covered with non- or poorly crystalline phase even after the annealing, and others showed a lamellar microstructure parallel to the (0 0 1) plane. Theilmenite-type FeGeO3 showed typical antiferromagnetic behavior with the Neel temperature of 79 K. (c) 2012 Elsevier Inc. All rights reserved.
- Link information
- ID information
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- DOI : 10.1016/j.jssc.2012.11.020
- ISSN : 0022-4596
- Web of Science ID : WOS:000314320800073