Enhancement of transport critical current density by Gd substitution in YBa2Cu3O7
Abstract
Samples with composition Y1-xGdxBa2Cu3O7 (x=0.001-0.005) are prepared and TC, ΔTC, JC, ρ(300 K) are measured. It is shown that upon substituting yttrium by small amounts of gadolinium, JC can be improved significantly. The anticorrelation of JC with ΔTC and ρ(300 K) is established. The possible role of gadolinium in enhancing JC is discussed. General guidelines for getting high JC values are gathered.
- Publication:
-
Applied Physics Letters
- Pub Date:
- April 1988
- DOI:
- Bibcode:
- 1988ApPhL..52.1447S
- Keywords:
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- Current Density;
- Current Distribution;
- Gadolinium;
- High Temperature Superconductors;
- Mixed Oxides;
- Yttrium Oxides;
- Barium Oxides;
- Copper Oxides;
- Volt-Ampere Characteristics;
- Solid-State Physics