教師資料查詢 | 類別: 期刊論文 | 教師: 莊程豪 CHENG-HAO CHUANG (瀏覽個人網頁)

標題:Effect of geometry on the magnetic properties of CoFe2O4–PbTiO3 multiferroic composites
學年101
學期2
出版(發表)日期2013/03/01
作品名稱Effect of geometry on the magnetic properties of CoFe2O4–PbTiO3 multiferroic composites
作品名稱(其他語言)
著者Wang, B. Y.; Wang, H. T.; Singh, Shashi B.; Shao, Y. C.; Wang, Y. F.; Chuang, C. H.; Yeh, P.H.; Chiou, J. W.; Pao, C. W.; Tsai, H. M.; Lin, H. J.; Lee, J. F.; Tsai, C. Y.; Hsieh, W.F.; Tsai, M.-H.; Pong, W. F.
單位淡江大學物理學系
出版者Cambridge: R S C Publications
著錄名稱、卷期、頁數RSC Advances 3(21), pp.7884-7893
摘要In this study, X-ray absorption near-edge structure (XANES), extended X-ray absorption fine structure (EXAFS), X-ray magnetic circular dichroism (XMCD) and element- and site-specific magnetic hysteresis (ESMH) are used to elucidate the effect of geometry (0-3- and 2-2-type) on the magnetic properties of CoFe2O4–PbTiO3 (CFO–PTO) multiferroic composites by comparison with those of the reference CFO and PTO powders. Magnetic Co ions in CFO have been confirmed to be located at both the tetrahedral (A)- and octahedral (B)-sites. CFO retains its mixed-spinel structure as verified by the EXAFS, XMCD and ESMH measurements. ESMH measurements further demonstrate that the magnetic moments of Co2+ and Fe3+/Fe2+ cations at both the A- and B-sites in the composites are smaller than those of the CFO powder. The reduction of the magnetic moments in the 2-2-type composite was larger than that in the 0-3-type composite. The reduction of the magnetic moments in the composites was attributable to the formation of anti-phase boundaries owing to the compressive strain in CFO, which is the largest strain in the 2-2-type composite. Based on the Ti L3,2-edge XMCD measurements of the CFO–PTO composites, no induced magnetic moment was observed at the Ti sites in the PTO matrix, excluding the possibility that the Ti ions in the PTO matrix affect the magnetic properties of these CFO–PTO composites.
關鍵字
語言英文
ISSN
期刊性質國外
收錄於SCI;
產學合作
通訊作者Pong, W. F.
審稿制度
國別英國
公開徵稿
出版型式電子版
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