Interacciones cuadripolares en SrZrO<SUB>3</SUB>
- Autores
- López García, Alberto; Alonso, Roberto Emilio
- Año de publicación
- 2004
- Idioma
- español castellano
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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 C)→0 of the rigid oxygen octahedron about the c axis. This transition is of second order and can be described by ø(T) ∼ ø0 (TC-T)β. 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 SrZrO3 are discussed.
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
Física
defects
hyperfine interaction
perovskites
phase transitions - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc/3.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/34631
Ver los metadatos del registro completo
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Interacciones cuadripolares en SrZrO<SUB>3</SUB>Quadrupole interactions in SrZrO<SUB>3</SUB>López García, AlbertoAlonso, Roberto EmilioCiencias ExactasFísicadefectshyperfine interactionperovskitesphase transitionsThe 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.Facultad de Ciencias Exactas2004info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf695-697http://sedici.unlp.edu.ar/handle/10915/34631spainfo:eu-repo/semantics/altIdentifier/url/http://ceramicayvidrio.revistas.csic.es/index.php/ceramicayvidrio/article/view/478/498info:eu-repo/semantics/altIdentifier/issn/0366-3175info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc/3.0/Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T10:49:36Zoai:sedici.unlp.edu.ar:10915/34631Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 10:49:37.245SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Interacciones cuadripolares en SrZrO<SUB>3</SUB> Quadrupole interactions in SrZrO<SUB>3</SUB> |
| title |
Interacciones cuadripolares en SrZrO<SUB>3</SUB> |
| spellingShingle |
Interacciones cuadripolares en SrZrO<SUB>3</SUB> López García, Alberto Ciencias Exactas Física defects hyperfine interaction perovskites phase transitions |
| 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> |
| dc.creator.none.fl_str_mv |
López García, Alberto Alonso, Roberto Emilio |
| author |
López García, Alberto |
| author_facet |
López García, Alberto Alonso, Roberto Emilio |
| author_role |
author |
| author2 |
Alonso, Roberto Emilio |
| author2_role |
author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Física defects hyperfine interaction perovskites phase transitions |
| topic |
Ciencias Exactas Física defects hyperfine interaction perovskites phase transitions |
| dc.description.none.fl_txt_mv |
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. Facultad de Ciencias Exactas |
| 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. |
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2004 |
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2004 |
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