%0 Journal Article
%T Synthesis and Structural Study of Sr2CuO3+δ Superconductor under High Pressure
%J 中国物理快报
%D 2008
%I 
%X A single-phase Sr2CuO3+δ superconductor is synthesized under high temperature and high pressure, in which oxygen atoms only partially occupy the apical sites next to the CuO2 planes and act as hole-dopants. Thesuperconducting transition temperature with Tcmax=75K is achieved in the material. Structure analysis from x-ray powder diffraction data show that this material crystallizes into a K2NiF4 structure with tetragonal unit cell of a=3.795(3)AAand c= 12.507(1)AA. Energy-dispersive synchrotron x-ray-diffraction studies at ambient are performed on powder samples of Sr2CuO3+δ in a diamond-anvil cell at pressure up to 35GPa. Anisotropic compressibility is found. Pressure-induced isostructural phase transition might exist as revealed by the discontinuous change of crystal cell volume V withpressure.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=91BE7CF1EED3CE243D264DFA488621E3&yid=67289AFF6305E306&vid=C5154311167311FE&iid=B31275AF3241DB2D&sid=7A4D490451ECA9E5&eid=0919ABED4B23AD8B&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0