Interacciones cuadripolares en SrZrO<SUB>3</SUB>
The SrMO3 compounds with M = Ru, Zr ó Hf display similar structures. They are orthorhombic at room temperature (RT) and transform into tetragonal (14/mcm) and cubic (Pm3m) at higher temperatures. These structures are characterized by rotations of the quasi-rigid oxygen octahedron through different a...
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| Autores principales: | , |
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| Formato: | Articulo |
| Lenguaje: | Español |
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2004
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/34631 http://ceramicayvidrio.revistas.csic.es/index.php/ceramicayvidrio/article/view/478/498 |
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I19-R120-10915-34631 |
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dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Español |
| topic |
Ciencias Exactas Física defects hyperfine interaction perovskites phase transitions |
| spellingShingle |
Ciencias Exactas Física defects hyperfine interaction perovskites phase transitions López García, Alberto Alonso, Roberto Emilio Interacciones cuadripolares en SrZrO<SUB>3</SUB> |
| topic_facet |
Ciencias Exactas Física defects hyperfine interaction perovskites phase transitions |
| description |
The SrMO3 compounds with M = Ru, Zr ó Hf display similar structures. They are orthorhombic at room temperature (RT) and transform into tetragonal (14/mcm) and cubic (Pm3m) at higher temperatures. These structures are characterized by rotations of the quasi-rigid oxygen octahedron through different axes. As temperature increases the rotation axes changes at the transition temperature but the M-O distances remain almost constant (1%) in the whole temperature range. The crystallographic study of the tetragonal to cubic transformation shows that it occurs by the rotation ø(T <SUB>C</SUB>)→0 of the rigid oxygen octahedron about the c axis. This transition is of second order and can be described by ø(T) ∼ ø0 (T<SUB>C</SUB>-T)<SUP>β</SUP>. β is the critical exponent and was fitted to 1/2, 1/4 and 1/8 for M = Hf, Zr and Ru, respectively. The electronic structure of these compounds should follows such changes and can be studied through the measurement of the quadrupole interaction as a function of temperature. In this contribution these results obtained by Perturbed Angular Correlations spectroscopy (PAC) for SrZrO<SUB>3</SUB> are discussed. |
| format |
Articulo Articulo |
| author |
López García, Alberto Alonso, Roberto Emilio |
| author_facet |
López García, Alberto Alonso, Roberto Emilio |
| author_sort |
López García, Alberto |
| title |
Interacciones cuadripolares en SrZrO<SUB>3</SUB> |
| title_short |
Interacciones cuadripolares en SrZrO<SUB>3</SUB> |
| title_full |
Interacciones cuadripolares en SrZrO<SUB>3</SUB> |
| title_fullStr |
Interacciones cuadripolares en SrZrO<SUB>3</SUB> |
| title_full_unstemmed |
Interacciones cuadripolares en SrZrO<SUB>3</SUB> |
| title_sort |
interacciones cuadripolares en srzro<sub>3</sub> |
| publishDate |
2004 |
| url |
http://sedici.unlp.edu.ar/handle/10915/34631 http://ceramicayvidrio.revistas.csic.es/index.php/ceramicayvidrio/article/view/478/498 |
| work_keys_str_mv |
AT lopezgarciaalberto interaccionescuadripolaresensrzrosub3sub AT alonsorobertoemilio interaccionescuadripolaresensrzrosub3sub AT lopezgarciaalberto quadrupoleinteractionsinsrzrosub3sub AT alonsorobertoemilio quadrupoleinteractionsinsrzrosub3sub |
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Repositorios |
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1764820470214950912 |