The Effect of Oxygen Vacancies in Ca1−xSrxHfO3
Samples of Ca 1−x Sr x HfO 3 with x = 0.25, 0.50 and 0.75 have been studied. These oxides were synthesized using the high temperature solid state reaction method that can produce oxygen vacancies. The lattice and the hyperfine interaction parameters were determined. From these data it is possible co...
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| Published in: | Ferroelectrics Vol. 396; no. 1; pp. 37 - 48 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
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01-01-2010
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| Abstract | Samples of Ca
1−x
Sr
x
HfO
3
with x = 0.25, 0.50 and 0.75 have been studied. These oxides were synthesized using the high temperature solid state reaction method that can produce oxygen vacancies. The lattice and the hyperfine interaction parameters were determined. From these data it is possible correlate the behaviour of the hyperfine parameters with composition and temperature. The effect of oxygen vacancies is analyzed. The temperature dependence of hyperfine parameters display discontinuities that are interpreted as signs of crystalline phase transitions at about 900, 850 and 700 K, for x = 0.25, 0.50 and 0.75, respectively. |
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| AbstractList | Samples of Ca1-xSrxHfO3 with x = 0.25, 0.50 and 0.75 have been studied. These oxides were synthesized using the high temperature solid state reaction method that can produce oxygen vacancies. The lattice and the hyperfine interaction parameters were determined. From these data it is possible correlate the behaviour of the hyperfine parameters with composition and temperature. The effect of oxygen vacancies is analyzed. The temperature dependence of hyperfine parameters display discontinuities that are interpreted as signs of crystalline phase transitions at about 900, 850 and 700 K, for x = 0.25, 0.50 and 0.75, respectively. Samples of Ca 1−x Sr x HfO 3 with x = 0.25, 0.50 and 0.75 have been studied. These oxides were synthesized using the high temperature solid state reaction method that can produce oxygen vacancies. The lattice and the hyperfine interaction parameters were determined. From these data it is possible correlate the behaviour of the hyperfine parameters with composition and temperature. The effect of oxygen vacancies is analyzed. The temperature dependence of hyperfine parameters display discontinuities that are interpreted as signs of crystalline phase transitions at about 900, 850 and 700 K, for x = 0.25, 0.50 and 0.75, respectively. |
| Author | Falabella, M. López-garcía, A. Alonso, R. E. Echeverría, G. |
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| Keywords | Vacancies Lattice distortion Calcium Strontium Hafnates Mixed Perovskites XRD High temperature Lattice parameters Electric field gradients Perturbed angular correlation Solid solutions Oxygen Vacancies Temperature effects Solid state reaction Chemical composition Hyperfine interactions TDPAC |
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| Snippet | Samples of Ca
1−x
Sr
x
HfO
3
with x = 0.25, 0.50 and 0.75 have been studied. These oxides were synthesized using the high temperature solid state reaction... Samples of Ca1-xSrxHfO3 with x = 0.25, 0.50 and 0.75 have been studied. These oxides were synthesized using the high temperature solid state reaction method... |
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| SubjectTerms | Condensed matter: electronic structure, electrical, magnetic, and optical properties Crystal structure Discontinuity Exact sciences and technology Ferroelectric materials Interaction parameters Lattice vacancies Magnetic resonances and relaxations in condensed matter, mössbauer effect Mössbauer effect; other γ-ray spectroscopy Oxides Oxygen Vacancies Perovskites Physics Solid Solutions TDPAC Temperature dependence Vacancies |
| Title | The Effect of Oxygen Vacancies in Ca1−xSrxHfO3 |
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