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Possible hydrogen doping and enhancement of in a LaFeAsO-based superconductor
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10.1063/1.3319508
/content/aip/journal/apl/96/7/10.1063/1.3319508
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/7/10.1063/1.3319508

Figures

Image of FIG. 1.
FIG. 1.

Sample cell assembly used in HP synthesis technique: (a) method-I and (b) method-II. (c) XRD patterns of for (method-I and II), Ce, and Pr (method-II).

Image of FIG. 2.
FIG. 2.

-NMR spectrum of (a) La1111(H) ( and ) and (b) ( and ) (Ref. 9).

Image of FIG. 3.
FIG. 3.

Temperature dependent susceptibility for (a) La1111(H) (method-I), (b) La1111(H) (method-II), (c) Ce1111(H) (method-II), and (d) Pr1111(H) (method-II). Data of the H-free O-deficient samples are also shown in the figures as open circles. The base lines (normal state susceptibility) are shifted for comparison. are indicated by arrows.

Image of FIG. 4.
FIG. 4.

Temperature dependent resistivity for (, Ce, and Pr, method-II). The inset shows the temperature dependence of resistivity near .

Image of FIG. 5.
FIG. 5.

- and -axes lattice parameters and (-onset) of the samples together with those of H-free O-deficient for comparison. The inset shows that relationship between the -axis lattice parameter and (-onset) for the highest H-free O-deficient and . Dashed lines are guides to the eye.

Tables

Generic image for table
Table I.

Lattice parameters and of (, Ce, and Pr).

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/content/aip/journal/apl/96/7/10.1063/1.3319508
2010-02-19
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Possible hydrogen doping and enhancement of Tc(=35 K) in a LaFeAsO-based superconductor
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/7/10.1063/1.3319508
10.1063/1.3319508
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