Abstract
We have synthesized polycrystalline bulk FeSe materials with various Ag concentrations through double-sintering solid-state reaction. All the samples exhibited similar onset critical temperature of around 8 K. Atomic force microscopic observation revealed that the grain connectivity was improved through Ag addition. Raman spectroscopic studies confirmed that pristine and Ag-doped FeSe compounds have superconducting tetragonal structure with high crystalline quality. There was a clear red shift and peak broadening in Fe-related Raman modes when the Ag concentration is increased, which might be ascribed to the incorporation of Ag+ ions into the FeSe lattice. The critical current density decreased with Ag addition, although onset critical temperature remained constant.
| Original language | English |
|---|---|
| Pages (from-to) | 1-6 |
| Number of pages | 6 |
| Journal | Journal of Superconductivity and Novel Magnetism |
| DOIs | |
| Publication status | Accepted/In press - 2017 Apr 27 |
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Keywords
- Ag-added FeSe
- Atomic force microscopy
- Critical current density (J)
- Raman spectroscopy
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Effect of Ag Addition on Microstructure and Raman Vibrational Modes of Bulk FeSe. / Fabitha, K.; Ramachandra Rao, M. S.; Miryala, Muralidhar; Furutani, K.; Murakami, Masato.
In: Journal of Superconductivity and Novel Magnetism, 27.04.2017, p. 1-6.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of Ag Addition on Microstructure and Raman Vibrational Modes of Bulk FeSe
AU - Fabitha, K.
AU - Ramachandra Rao, M. S.
AU - Miryala, Muralidhar
AU - Furutani, K.
AU - Murakami, Masato
PY - 2017/4/27
Y1 - 2017/4/27
N2 - We have synthesized polycrystalline bulk FeSe materials with various Ag concentrations through double-sintering solid-state reaction. All the samples exhibited similar onset critical temperature of around 8 K. Atomic force microscopic observation revealed that the grain connectivity was improved through Ag addition. Raman spectroscopic studies confirmed that pristine and Ag-doped FeSe compounds have superconducting tetragonal structure with high crystalline quality. There was a clear red shift and peak broadening in Fe-related Raman modes when the Ag concentration is increased, which might be ascribed to the incorporation of Ag+ ions into the FeSe lattice. The critical current density decreased with Ag addition, although onset critical temperature remained constant.
AB - We have synthesized polycrystalline bulk FeSe materials with various Ag concentrations through double-sintering solid-state reaction. All the samples exhibited similar onset critical temperature of around 8 K. Atomic force microscopic observation revealed that the grain connectivity was improved through Ag addition. Raman spectroscopic studies confirmed that pristine and Ag-doped FeSe compounds have superconducting tetragonal structure with high crystalline quality. There was a clear red shift and peak broadening in Fe-related Raman modes when the Ag concentration is increased, which might be ascribed to the incorporation of Ag+ ions into the FeSe lattice. The critical current density decreased with Ag addition, although onset critical temperature remained constant.
KW - Ag-added FeSe
KW - Atomic force microscopy
KW - Critical current density (J)
KW - Raman spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85018306823&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85018306823&partnerID=8YFLogxK
U2 - 10.1007/s10948-017-4117-2
DO - 10.1007/s10948-017-4117-2
M3 - Article
SP - 1
EP - 6
JO - Journal of Superconductivity and Novel Magnetism
JF - Journal of Superconductivity and Novel Magnetism
SN - 1557-1939
ER -