Abstract
Comprehensive X-ray diffraction study on the sub-solidus phase diagram in Pr6O11-La2O3-CuO system firstly revealed a new phase of Pr2-xLaxCuO4 for 1.35 < x < 1.5. The phase has a tetragonal symmetry similar to the well-known T′-type structure (0 < x < 0.9). However, the lattice constants of both a and c are clearly distinct between the two tetragonal phases. The new phase coexists with the T′-phase for 0.9 < x < 1.3 and with the orthorhombic T-phase for 1.5 < x < 1.6. The sintered pellet of the new phase instantly transforms into fine powder (∼10 μm) upon cooling from synthesized temperature to room temperature without any compositional phase separation.
| Original language | English |
|---|---|
| Pages (from-to) | 395-398 |
| Number of pages | 4 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 378-381 |
| Issue number | PART 1 |
| DOIs | |
| Publication status | Published - Oct 1 2002 |
Keywords
- N-type cuprate
- Phase separation
- Pr-La-Cu-O system
- T′-structure
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
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Ikeda, Y., Yamada, K., Kusano, Y., & Takada, J. (2002). A new tetragonal phase in La-rich Pr2-xLaxCuO4 (1.35 < x < 1.5). Physica C: Superconductivity and its applications, 378-381(PART 1), 395-398. https://doi.org/10.1016/S0921-4534(02)01453-3