Effect of Ag Addition on Microstructure and Raman Vibrational Modes of Bulk FeSe

K. Fabitha; M. S. Ramachandra Rao; Muralidhar Miryala; K. Furutani; Masato Murakami

doi:10.1007/s10948-017-4117-2

Effect of Ag Addition on Microstructure and Raman Vibrational Modes of Bulk FeSe

K. Fabitha, M. S. Ramachandra Rao, Muralidhar Miryala, K. Furutani, Masato Murakami

Research output: Contribution to journal › Article

5 Citations (Scopus)

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	https://doi.org/10.1007/s10948-017-4117-2
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

Fabitha, K., Ramachandra Rao, M. S., Miryala, M., Furutani, K., & Murakami, M. (Accepted/In press). Effect of Ag Addition on Microstructure and Raman Vibrational Modes of Bulk FeSe. Journal of Superconductivity and Novel Magnetism, 1-6. https://doi.org/10.1007/s10948-017-4117-2

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AU - Murakami, Masato

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10.1007/s10948-017-4117-2