%0 Journal Article
%T UARIATION OF Pr VALENCE VALUE VERSUS OXYGEN CONTENT IN PrBa2Cu3O6+x(x=1,0.3)<br>PrBa2Cu3O6+x(x=1,0.3)中Pr价态随氧含量的变化
%A YE HONG-JUAN
%A LI BIAO
%A LI ZHI-FENG
%A XIONG GUANG-CHENG
%A WANG RUI-LAN
%A LI HONG-CHENG
%A LIU PENG
%A <br>叶红娟
%A 李 标
%A 李志锋
%A 熊光成
%A 王瑞兰
%A 李宏成
%A 刘 鹏
%J 物理学报
%D 1998
%I 
%X The infrared spectra of PrBa2Cu3O6+x (x=1, 0.3) ceramics and films with c-axis orientation are reported in this paper, and the phonon modes in c-axis and ab-plane are distinguished by treating the different vibrational behaviour for film and ceramic samples. Due to the fact that PrBa2Cu3O6+x possesses the similar crystal structure as RBa2Cu3O6+x (R=Y and other rare earth elements), by comparing the phonon spectra, espeacially the B1u (x=1), Eu and A2u (x=0.3) modes of Pr, Y and other rare earth elements, it is found that the valence value of Pr depends on the oxygen content, i.e., the Pr valence is 3+ in PrBa2Cu3O6.3 while it is larger then 3+ in PrBa2Cu3O7.
%K PBCO
%K 超导薄膜
%K 氧含量
%K 镨价态
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=478BD5F0F36565A6E33DBE251FC98A23&yid=8CAA3A429E3EA654&vid=F4B561950EE1D31A&iid=5D311CA918CA9A03&sid=700C99D38A660C7C&eid=5A64531D29896B77&journal_id=1000-3290&journal_name=物理学报&referenced_num=2&reference_num=6