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《Journal of Anhui Normal University(Natural Science)》 2003-01
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The Influence of Cr Doping on Physicd Characters of La_(0.67)Ca_(0.33)MnO_3

PENG Zhen sheng 1, SUN Yang 2 (1.Suzhou Teachers College,Suzhou 234000, China; 2.Structure Analysis Opening Laboratory of Chinese Science and Technology University, Hefei 230026, China)  
In this anticle we have studied the influence of Cr doping on physical characters of La 0.67 Ca 0.33 MnO 3,The in fluence of Cr doping on Crystal structure, on magnetic field, and on polaron transition of La 0.67 Ca 0.33 MnO 3,and the abnormal resistance and magnetic resistance action carsed by Crdoping have been researched There are new discoveries: the experimental results show special double-peak CMR action;moreouer, the temperature range of CMR effect has been extremely expanded, it is between the low temperature range and above the room temperature. So we can conclude that Cr doping at mu site is an effective way of adjusting CMR effect.
【Fund】: 国家自然科学重点基金 (1993 40 0 3 )资助
【CateGory Index】: O482.5
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