Sammanfattning
57Fe-doped and undoped single crystals were grown for Mössbauer and magnetic AC susceptibility measurements. The effects of cooling rate and the concentration of the YBa2(Cu1-x57Fex)3O7-δ-powder in the melt were examined. The lattice parameters of the single crystals were determined by x-ray diffraction. Growth in air yielded orthorhombic crystals with a- and b-axes differing only slightly and having Tc=77K for undoped and 57 K for 57Fe-doped crystals. Mössbauer spectra indicated the presence of regions with different oxygen contents.
| Originalspråk | Engelska |
|---|---|
| Sidor (från-till) | 1259-1260 |
| Antal sidor | 2 |
| Tidskrift | Physica C: Superconductivity and its Applications |
| Volym | 162-164 |
| Nummer | Part 2 |
| DOI | |
| Status | Publicerad - dec. 1989 |
| MoE-publikationstyp | A1 Tidskriftsartikel-refererad |