Open AccessTHERMODYNAMICAL BEHAVIOR OF 57Fe IMPLANTED IN ZrO2(Y) BY CEMS AND SLOW POSITRON BEAM
Author(s) -
YU Fanghua,
ZHANG GUI LIN,
YU SHI JUN,
Weng Hui-Min,
ZHANG HANG-HUA
Publication year - 1997
Publication title -
acta physica sinica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.46.109
Subject(s) - conversion electron mössbauer spectroscopy , materials science , annealing (glass) , positron , mössbauer spectroscopy , ion beam , ion , cationic polymerization , electron , doppler broadening , ion implantation , atomic physics , analytical chemistry (journal) , mössbauer effect , crystallography , nuclear physics , chemistry , spectral line , physics , metallurgy , organic chemistry , chromatography , astronomy , polymer chemistry
By using conversion electron M?ssbauer spectroscopy (CEMS) and slow positron beam Doppler broading spectrum,the behaviour of the 57Fe implanted (100keV,3×1016 at./cm2) ZYx contained Y2O3 has been studied.The states of Fe0,Fe2+ and Fe3+ ions were obtained from CEMS for as implanted samples.After annealing at 500℃,metallic iron particles α-Fe, were formed at expense of other components. From the S-E curve of the 57Fe as implanted sample,it was found that a large amount of cationic vacancies were distributed in a region of 0—50nm in ZY3.These vacancies disappeared largely after annealing at 500℃.Therefore the parameter S provided an evidence to identify the iron sites in the implanted sample.The ZY3 appeared mingle conducting property at 300℃.It probably correlates with different iron charge states,especially with that of Fe0.
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