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標題:Charge ordering and the related structural phase transition in single crystal Bi0.24Ca0.76MnO3
學年87
學期2
出版(發表)日期1999/05/01
作品名稱Charge ordering and the related structural phase transition in single crystal Bi0.24Ca0.76MnO3
作品名稱(其他語言)
著者Su, Y.; Du, C-H.; Hatton, P. D.; Collins, S. P.; Cheong, S-W.
單位淡江大學物理學系
出版者College Park: American Physical Society
著錄名稱、卷期、頁數Physical Review B (Condensed Matter and Materials Physics) 59(18), pp.11687-11692
摘要A single crystal of ~Bi0.24Ca0.76!MnO3 has been extensively studied using both laboratory and synchrotron radiation x-ray scattering. Using x-ray techniques we can directly observe the formation of charge stripes associated with the low-temperature structural phase transition. Weak satellite peaks with a modulation wave vector q'(0.24, 0.24, 0) were observed below the transition temperature. These are associated with the charge ordering of Mn31 and Mn41 ions into charge ~and spin! stripes within the perovskite structure. Measurements of the temperature dependence of the intensity and width of the charge-ordering satellites over the temperature range 10–240 K were also completed. These demonstrate the first-order nature of the structural phase transition that accompanies the formation of charge and spin ordering. Measurements of the width of the charge-order satellites demonstrate that the correlation length of the charge order is long range at all temperatures, and in all directions, below the structural phase transition.
關鍵字
語言英文
ISSN1098-0121
期刊性質國外
收錄於SCI
產學合作
通訊作者Hatton, P. D.
審稿制度
國別美國
公開徵稿
出版型式紙本
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