TP）表現為光致電阻率減小。從過渡金屬Cr，Fe和Co離子自身電子結構和晶格效應的角度出發(fā)，討論了樣品輸運行為和光誘導特性的內在機理。"/>

最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
錳位摻雜La0.7Ba0.3Mn0.95X0.05O3(X=Mn, Cr, Fe, Co)薄膜光誘導特性研究
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家自然科學基金重點項目(50331040；50702046)


Photoinduced Characteristics of Mn Site Doped La0.7Ba0.3Mn0.95X0.05O3 (X=Mn, Cr, Fe, Co) Thin Films
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計
    • |
  • 參考文獻
    • |
  • 相似文獻
    • |
  • 引證文獻
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    用固相反應法制備La0.7Ba0.3Mn0.95X0.05O3(X=Mn，Cr，Fe，Co)系列塊材，并利用磁控濺射法在LaAlO3單晶襯底上制備薄膜，研究過渡金屬元素（Cr，Fe和Co）錳位摻雜對La0.7Ba0.3MnO3（LBMO）薄膜光誘導特性的影響。研究表明，Cr，Fe和Co摻雜均導致薄膜的金屬-絕緣轉變溫度（TP）降低，電阻率和光致電阻率相對變化的最大值（LRmax）增大。其中Fe離子對體系影響最大，Co離子次之，Cr離子影響最小。激光誘導在不同溫區(qū)對薄膜電阻率的影響不同，在低溫（T< TP）區(qū)表現為光致電阻率增大，在高溫區(qū)（T> TP）表現為光致電阻率減小。從過渡金屬Cr，Fe和Co離子自身電子結構和晶格效應的角度出發(fā)，討論了樣品輸運行為和光誘導特性的內在機理。

    Abstract:

    The compounds of La0.7Ba0.3Mn0.95X0.05O3 (X= Mn, Cr, Fe, Co) were prepared by a conventional solid reaction method and then their films were prepared on LaAlO3 single crystal substrate by a magnetron sputtering method. The effects of the Mn site doping of transition elements (Cr, Fe, Co) on the photoinduced properties of the La0.7Ba0.3MnO3 (LBMO) films were investigated. Results indicate that the transition element doping of Cr, Fe or Co causes a decrease of the insulator-metal transition temperature (Tp) and an increase of the maximum relative variation (LRmax) of resistivity and the photoinduced resistivity. Among them, Fe has the largest effect, Co comes second and Cr has the smallest. Laser induction has different influences on the resistivity of films in different temperature zones. In a low temperature zone (TTp) it is decreased. The intrinsic mechanism of the transport behavior and photoinduced properties was discussed in view of the electronic structure and lattice effect of Cr, Fe and Co.

    參考文獻
    相似文獻
    引證文獻
引用本文

賈錫文,陳長樂,金克新,王建元,馬 強.錳位摻雜La0.7Ba0.3Mn0.95X0.05O3(X=Mn, Cr, Fe, Co)薄膜光誘導特性研究[J].稀有金屬材料與工程,2010,39(11):1952~1955.[Jia Xiwen, Chen Changle, Jin Kexin, Wang Jianyuan, Ma Qiang. Photoinduced Characteristics of Mn Site Doped La0.7Ba0.3Mn0.95X0.05O3 (X=Mn, Cr, Fe, Co) Thin Films[J]. Rare Metal Materials and Engineering,2010,39(11):1952~1955.]
DOI：[doi]

復制
文章指標
  • 點擊次數:
  • 下載次數:
  • HTML閱讀次數:
  • 引用次數:
歷史
  • 收稿日期:2009-12-19
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: