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 en
ISSN 1098-0121
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 USA
公開徵稿
出版型式 紙本
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