Abstract
Temperature and field dependences of the magnetic susceptibility of DyBa2Cu3O6.2 single crystals and DyxY1-xBa2Cu 3O7-δ (δ≈0.7, 0.7≤x≤1.0) ceramics were studied in a permanent magnetic field up to 20 kOe at 0.4-4.2 K. The jump-like singularity is observed at all concentrations of Dy3+ ion in ceramics and in the case of a single crystal in the χ(T)H dependence (H≠0). The jump temperature and its magnitude are determined as a function of magnetic field. The dependences of electric resistance and magnetoresistance also exhibit peculiarities characteristic of the structural phase transition. The presence of hysteresis in χ(T)H in the vicinity of Tt and singularities of thermograms are the evidence for the first-order phase transition which can be regarded as the cause of the magnetic susceptibility jumps.
Original language | English |
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Pages (from-to) | 23-28 |
Number of pages | 6 |
Journal | Physica C: Superconductivity and its Applications |
Volume | 208 |
Issue number | 1-2 |
DOIs | |
State | Published - 1 Apr 1993 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering