%0 Journal Article
%T VARIATION OF HOLE CONCENTRATION INDUCED BY ELEMENT SUBSTITUTION AT Y AND Cu(I) SITES IN YBa2Cu3Oy SYSTEM<br>YBa2Cu3Oy中对Y位与Cu(Ⅰ)位取代导致的空穴浓度变化
%A ZHAO YONG
%A HE YE-YE
%A ZHANG HAN
%A ZHUGE XIANG-BIN
%A XU ZHU-AN
%A LI TAO-YU
%A ZHANG QI-RUI
%A TANG XIAO-MING
%A ZHAO PENG-CHENG
%A <br>赵勇
%A 何业冶
%A 张酣
%A 诸葛向彬
%A 许祝安
%A 李陶宇
%A 张其瑞
%A 唐晓明
%A 赵鹏程
%J 物理学报
%D 1991
%I 
%X The origin and the regularity of the variation of hole concentration as well as the crystal structure and superconducting critical temperature versus the doping contents of Co for Cu (I) and Ca for Y in YBa2Cu3Oy are studied in this paper. The results reveal that the pattern in which the hole concentration in Cu-O sheets, Psh, is influenced greatly by the substitution depends upon the different substituting elements as well as the different atomic sites, e.g. the decrease of Psh in system substituted by Co for Cu (I) is from filling and localizing of holes, but the increase of Psh in system of Ca replacing for Y is due to the delocalization effect of the holes. When Y and Cu (1) are substituted simutaneously with Ca and Co respectively, the generation instead of the localization effect cf the holes is important for the change of Psh. In addition, the relationship between Psh and Tc is discussed.
%K YBaCuO
%K Co
%K Y位
%K 空穴浓度
%K Cu（Ⅰ）位
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=433445AE96601F02D33CBCDCBB0947D7&yid=116CB34717B0B183&vid=1371F55DA51B6E64&iid=5D311CA918CA9A03&sid=9C959CAF55D6B1C2&eid=B7AB8E33F0FC19ED&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=3