Determination of foreign phases in Fe-As based superconducting systems

Israel Felner; Israel Nowik; Bing Lv; Joshua H. Tapp; Zhongjia Tang; Arnold M. Guloy

doi:10.1007/s10751-009-9953-4

Determination of foreign phases in Fe-As based superconducting systems

Israel Felner^*
, Israel Nowik
, Bing Lv
, Joshua H. Tapp
, Zhongjia Tang
, Arnold M. Guloy

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

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, RAsFeO_1∈-∈x F _x , Sr _1∈-∈x K _x Fe₂As₂ and LiFeAs, prepared in three different laboratories.

Original language	English
Pages (from-to)	61-65
Number of pages	5
Journal	Hyperfine Interactions
Volume	191
Issue number	1-3
DOIs	https://doi.org/10.1007/s10751-009-9953-4
State	Published - Jun 2009

Keywords

Fe-As based superconductors
Impurity phases
Mössbauer Spectroscopy
Spin density waves

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10.1007/s10751-009-9953-4

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title = "Determination of foreign phases in Fe-As based superconducting systems",

abstract = "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. M{\"o}ssbauer 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.",

keywords = "Fe-As based superconductors, Impurity phases, M{\"o}ssbauer Spectroscopy, Spin density waves",

author = "Israel Felner and Israel Nowik and Bing Lv and Tapp, \{Joshua H.\} and Zhongjia Tang and Guloy, \{Arnold M.\}",

year = "2009",

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doi = "10.1007/s10751-009-9953-4",

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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

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Determination of foreign phases in Fe-As based superconducting systems

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