TY - JOUR
T1 - Mössbauer spectroscopy determination of iron foreign phases in the superconducting systems; RAsFeO 1-x, RAsFeO 1-xF x, and Sr 1-xK xFe 2As 2
AU - Nowik, I.
AU - Felner, I.
PY - 2008/7
Y1 - 2008/7
N2 - The recently discovered superconducting-spin density wave materials, containing Fe and As, have raised huge interest. However, most materials prepared to date, suffer from a varying degree of content of foreign Fe-As phases, Fe 2As, FeAs 2, and FeAs, which can lead to wrong conclusions concerning the properties of these materials. We show here that Mössbauer spectroscopy is able to determine quite easily the relative content of the foreign phases. This procedure is demonstrated by a study of seven samples of superconducting or spin density wave materials, prepared in three different laboratories.
AB - The recently discovered superconducting-spin density wave materials, containing Fe and As, have raised huge interest. However, most materials prepared to date, suffer from a varying degree of content of foreign Fe-As phases, Fe 2As, FeAs 2, and FeAs, which can lead to wrong conclusions concerning the properties of these materials. We show here that Mössbauer spectroscopy is able to determine quite easily the relative content of the foreign phases. This procedure is demonstrated by a study of seven samples of superconducting or spin density wave materials, prepared in three different laboratories.
KW - Fe-As based superconductors
KW - Impurity phases
KW - Mossbauer spectroscopy
KW - Spin density waves
UR - http://www.scopus.com/inward/record.url?scp=50249144605&partnerID=8YFLogxK
U2 - 10.1007/s10948-008-0333-0
DO - 10.1007/s10948-008-0333-0
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AN - SCOPUS:50249144605
SN - 1557-1939
VL - 21
SP - 297
EP - 300
JO - Journal of Superconductivity and Novel Magnetism
JF - Journal of Superconductivity and Novel Magnetism
IS - 5
ER -