Abstract
We performed the Raman measurements to investigate the effect of cation nonstoichiometry on Gd123 thin films. The Gd123 thin films are grown by a conventional pulsed laser deposition (PLD) method with cation off-stoichiometric target samples. The films show different superconducting (SC) properties (Tc, Jc) from one another. The Ba-poor composition shows the best SC properties, while the Ba-rich composition shows the worst properties. The Raman spectra also depend on the compositions. All the spectra exhibit the five phonon peaks peculiar to 123-structure, however, some show also other peaks which result from oxygen deficiency in the chain structure, or also other origins. We discuss that the SC properties are strongly affected by the disorders of Ba and chain sites due to the cation nonstoichiometry through the Raman spectra.
| Original language | English |
|---|---|
| Pages (from-to) | 96-99 |
| Number of pages | 4 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 463-465 |
| Issue number | SUPPL. |
| DOIs | |
| Publication status | Published - 2007 Oct 1 |
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Keywords
- Gd123
- Nonstoichiometry
- Phonon
- Raman
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Raman spectroscopy on nonstoichiometric Gd123 thin films. / Kakeshita, T.; Hirose, Kazuhide; Lee, S.
In: Physica C: Superconductivity and its Applications, Vol. 463-465, No. SUPPL., 01.10.2007, p. 96-99.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Raman spectroscopy on nonstoichiometric Gd123 thin films
AU - Kakeshita, T.
AU - Hirose, Kazuhide
AU - Lee, S.
PY - 2007/10/1
Y1 - 2007/10/1
N2 - We performed the Raman measurements to investigate the effect of cation nonstoichiometry on Gd123 thin films. The Gd123 thin films are grown by a conventional pulsed laser deposition (PLD) method with cation off-stoichiometric target samples. The films show different superconducting (SC) properties (Tc, Jc) from one another. The Ba-poor composition shows the best SC properties, while the Ba-rich composition shows the worst properties. The Raman spectra also depend on the compositions. All the spectra exhibit the five phonon peaks peculiar to 123-structure, however, some show also other peaks which result from oxygen deficiency in the chain structure, or also other origins. We discuss that the SC properties are strongly affected by the disorders of Ba and chain sites due to the cation nonstoichiometry through the Raman spectra.
AB - We performed the Raman measurements to investigate the effect of cation nonstoichiometry on Gd123 thin films. The Gd123 thin films are grown by a conventional pulsed laser deposition (PLD) method with cation off-stoichiometric target samples. The films show different superconducting (SC) properties (Tc, Jc) from one another. The Ba-poor composition shows the best SC properties, while the Ba-rich composition shows the worst properties. The Raman spectra also depend on the compositions. All the spectra exhibit the five phonon peaks peculiar to 123-structure, however, some show also other peaks which result from oxygen deficiency in the chain structure, or also other origins. We discuss that the SC properties are strongly affected by the disorders of Ba and chain sites due to the cation nonstoichiometry through the Raman spectra.
KW - Gd123
KW - Nonstoichiometry
KW - Phonon
KW - Raman
UR - http://www.scopus.com/inward/record.url?scp=34548429730&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34548429730&partnerID=8YFLogxK
U2 - 10.1016/j.physc.2007.05.011
DO - 10.1016/j.physc.2007.05.011
M3 - Article
AN - SCOPUS:34548429730
VL - 463-465
SP - 96
EP - 99
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - SUPPL.
ER -