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Control of the superconducting properties of Sr2-xCa xVO3FeAs through isovalent substitution

Abstract:

The effect of the isovalent substitution of Sr2+ by Ca 2+ on the structure and superconducting properties of Sr 2-xCaxVO3FeAs is described in the compositional range 0 ≤ x ≤ 0.5. SQUID magnetometry measurements reveal that after an initial increase in Tc, which is maximised at 29.5 K in Sr 1.95Ca0.05VO3FeAs, a rapid suppression of superconductivity is observed with increasing x. XANES spectra of Sr 2-xCaxVO3FeAs collected on the Fe and V absorption K-edges show that the position of both edges...

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Publisher copy:
10.1016/j.jssc.2014.02.024
Publisher:
Academic Press Inc.
Journal:
Journal of Solid State Chemistry
Volume:
216
Pages:
91-98
Publication date:
2014-01-01
DOI:
EISSN:
1095-726X
ISSN:
0022-4596
Language:
English
Keywords:
Pubs id:
pubs:471959
UUID:
uuid:0791cfa1-03e7-42df-825d-352d5fe5a75e
Local pid:
pubs:471959
Source identifiers:
471959
Deposit date:
2014-07-04

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