%0 Journal Article
%T Dielectric properties of Eu-doped polycrystalline TbMnO_3<br>Eu掺杂TbMnO_3多晶材料的介电性质
%A Guo Xi
%A Wang Xia
%A Zheng Wu
%A Tang Wei-Hua
%A <br>郭熹
%A 王霞
%A 郑鹉
%A 唐为华
%J 物理学报
%D 2010
%I 
%X Polycrystalline bulk Tb_(0.8_Eu_(0.2)MnO_3 was prepared by solid phase reaction.The XRD analysis of the sample showed that the Eu~(3+) had been doped in TbMnO_3.Dielectric properties were examined as functions of temperature(100 K≤T≤300 K)and frequency(200 Hz≤f≤100 kHz).Two dielectric relaxations were found in these ranges.By means of analysis the low-temperature relaxation was ascribed to the dipolar effects induced by carriers hopping;and the hightemperature relaxation was found to originate from the internal barrier-layer capacitor effects of ion conductivity.The measurement of resistivity showed that there is a marked transition around 230 K,indicating that different conductive mechanisms underlay the transport processes.
%K multiferroic materials
%K doped
%K dielectric properties<br>多铁性材料，
%K 掺杂，
%K 介电性质
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=D8238FCD18047BF131731977FDC31BBB&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=E158A972A605785F&sid=B55917F5071FEB5E&eid=FD538B8D3B94D5D7&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=17