TY - JOUR
T1 - Determination of foreign phases in Fe-As based superconducting systems
AU - Felner, Israel
AU - Nowik, Israel
AU - Lv, Bing
AU - Tapp, Joshua H.
AU - Tang, Zhongjia
AU - Guloy, Arnold M.
PY - 2009/6
Y1 - 2009/6
N2 - The recently discovered superconducting materials, containing Fe and As, have raised huge interest. However most materials prepared to date, suffer from a varying degree of content of foreign phases, Fe2As, FeAs 2 and FeAs, which can lead to wrong conclusions concerning the properties of these materials. Mössbauer Spectroscopy determines quite easily the relative content of the foreign phases. This procedure is demonstrated by a study of eight samples of three Fe-As based families of materials, RAsFeO1∈-∈x F x , Sr 1∈-∈x K x Fe2As2 and LiFeAs, prepared in three different laboratories.
AB - The recently discovered superconducting materials, containing Fe and As, have raised huge interest. However most materials prepared to date, suffer from a varying degree of content of foreign phases, Fe2As, FeAs 2 and FeAs, which can lead to wrong conclusions concerning the properties of these materials. Mössbauer Spectroscopy determines quite easily the relative content of the foreign phases. This procedure is demonstrated by a study of eight samples of three Fe-As based families of materials, RAsFeO1∈-∈x F x , Sr 1∈-∈x K x Fe2As2 and LiFeAs, prepared in three different laboratories.
KW - Fe-As based superconductors
KW - Impurity phases
KW - Mössbauer Spectroscopy
KW - Spin density waves
UR - http://www.scopus.com/inward/record.url?scp=67349212967&partnerID=8YFLogxK
U2 - 10.1007/s10751-009-9953-4
DO - 10.1007/s10751-009-9953-4
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AN - SCOPUS:67349212967
SN - 0304-3843
VL - 191
SP - 61
EP - 65
JO - Hyperfine Interactions
JF - Hyperfine Interactions
IS - 1-3
ER -