%0 Journal Article
%T Synthesis of ZnFe2O4 nanomagnets by Fe-ion implantation into ZnO and post-annealing<br>
%A Pan Feng
%A Guo Ying
%A Cheng Feng-Feng
%A Fa Tao
%A Yao Shu-De
%A <br>
%J 中国物理 B
%D 2011
%I 
%X Fe ions of dose 8 × 1016 cm-2 are implanted into a ZnO single crystal at 180 keV. Annealing at 1073 K leads to the formation of zinc ferrite (ZnFe2O4), which is verified by synchrotron radiation X-ray diffraction (SR-XRD) and X-ray photoelectron spectroscopy (XPS). The crystallographically oriented ZnFe2O4 is formed inside the ZnO with the orientation relationship of ZnFe2O4 (111)//ZnO (0001). Superconducting quantum interference device (SQUID) measurements show that the as-implanted and post-annealing samples are both ferromagnetic at 5 K. The synthesized ZnFe2O4 is superparamagnetic, with a blocking temperature (TB = 25 K), indicated by zero field cooling and field cooling (ZFC/FC) measurements.
%K Fe implanted|ZnO|ZnFe2O4|superparamagnetic<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=B8035D61C1BAF40F74391BFEEA6F8559&yid=9377ED8094509821&vid=A04140E723CB732E&iid=59906B3B2830C2C5&sid=E6CA06BB8E879BF0&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=33