%0 Journal Article
%T THE Li SITES IN THE RT AND LOW TEMPERATURE PHASES OF LiKSO4 CRYSTALS<br>硫酸锂钾的室温相和低温相的锂离子位置
%A Meng Qing-an
%A Cao Qi-juan
%A <br>孟庆安
%A 曹琪娟
%J 物理学报
%D 1983
%I 
%X A structural phase transition in crystal LiKSO4 at Tc = 195 K was confirmed by NMR experiment previously. In this article, the temperature dependence of the electric field gradient tensor at lithium site in the range of 110-300 K is reported, and combined with a simplified ion crystal model the crystal structure is discussed. It is shown that even in the room temperature phase, the lithium position should be at (2/3, 1/3, 0.706) instead of the position at (2/3, 1/3, 0.849) suggested previously by Bradley. The phase transition is attributed to the displacement of lithium ions. The space group of the low temperature phase may be R3.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=7DBC340526BDA5BB2B4199D2BA66D02B&yid=A7F20A391020FDEE&vid=9971A5E270697F23&iid=E158A972A605785F&sid=20C3B205768D55E0&eid=2A2AA8B7E19F0DF7&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0