期刊
APPLIED PHYSICS LETTERS
卷 95, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3213344
关键词
bismuth compounds; calcination; ceramics; cobalt compounds; Curie temperature; ferromagnetic materials; iron compounds; magnetic moments; multiferroics
资金
- Chinese National Natural Science Foundation [10274066]
- Jiangsu Province Department of Education [08KJB140011]
- U. S. Air Force Office of Scientific Research (AFOSR)
- U. S. Air Force Research Laboratories (AFRL)
Layer-structured, single phase Bi5Fe0.5Co0.5Ti3O15 ceramics was synthesized following a multicalcination procedure. Magnetic moment increases more than three times by substituting half Fe sites by Co ions. The material exhibits an Aurivillius phase with a four-layer unit cell structure, and presents a remarkable coexistence of ferroelectricity and ferromagnetism above room temperature. The measured 2P(r) and 2M(r) are 13 mu C/cm(2) and 7.8 memu/g, respectively. The material's magnetic behavior below 275 degrees C is relaxationlike and its magnetic Curie temperature is similar to 345 degrees C.
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