Título:
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Perturbed Angular Correlation Studies in SrTi0? Single Crystals
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Autores:
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Presa Muñoz del Toro, Patricia de la ;
Lieb, K. P. ;
Uhrmacher, M. ;
Ziegeler, L.
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Tipo de documento:
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texto impreso
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Editorial:
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Verlag Z Naturforsch, 2000-01
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física de materiales
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Materia = Ciencias: Física: Física del estado sólido
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Tipo = Artículo
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Resumen:
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The quadrupole hyperfine interactions of ^111Cd/^111 probe nuclei in single-crystalline SrTiO? perovskite samples were investigated using Perturbed Angular Correlation spectroscopy. Three electric field gradients were detected and their fractions and hyperfine parameters were measured in the temperature range from 26 to 700 K. The fraction f? having a vanishing quadrupole frequency, as expected for ^111Cd on substitutional sites in a cubic lattice, starts to develop around 300 K and reaches 100% at 700 K. Two well-defined EFG's having closely lying quadrupole frequencies and asymmetry parameters of ?_(Q1) = 49.1(3) Mrad/s, ?_(1) = 0.10(2) and ?_(Q2) = 51 8(3) Mrad/s, ?_(2)= 0.12(2), at room temperature, were identified in the temperature range from 250 to 530 K, and their (100) orientation in the lattice was determined. They are associated with electronic defects at the probe atoms.
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En línea:
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https://eprints.ucm.es/45626/1/DeLaPresaP%2018%20libre%20%2B%20CC%20non%20deriv.pdf
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