Lattice dynamical calculations on high Tc superconductor NdBazCu307 and non superconductor PrBazCw07 are studied using the shell model. Far Infrared reflection spectra of PrxNdl-xBazCU307-y and PrxYI-xBazCU307-y are studied for various Pr concentration x. Free carrier concentration for these systems
Lattice dynamics and the far infrared spectra of PrxEr1−xBa2Cu3O7−y and PrxGd1−xBa2Cu3O7−y
✍ Scribed by S. Onari; H. Fukunaga; M. Kado; T. Saito; T. Arai; T. Mori
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 137 KB
- Volume
- 185-189
- Category
- Article
- ISSN
- 0921-4534
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Utilizing high-resolution O K-edge X-ray absorption spectra, we report a comparative study on the variation of hole states with Pr doping for Y x Pr 1Àx Ba 2 Cu 3 O 7 and Y x Pr 1Àx Ba 2 Cu 4 O 8 . The depletion rate of hole carriers in the CuO 2 planes with Pr doping in Y x Pr 1Àx Ba 2 Cu 4 O 8 is
The concentration dependence of the transition temperature T c has been studied in the high-T c compounds (Y~ xTlx)-Ba2Cu307 y, Y(Ba 1 xKx)2Cu307 y and YBa2(Cu I xMg~)307 y. In the TI-compound, the results show little effect on T C. In the K-compound, T~ gradually drops with increasing K concentrati