Aging in the ferroic random-field Ising model system strontium-barium niobate
Autor(en): | Miga, S Dec, J Kleemann, W Pankrath, R |
Stichwörter: | DEPENDENCE; DOMAIN STATES; GLASSES; Materials Science; Materials Science, Multidisciplinary; MEMORY; Physics; Physics, Applied; Physics, Condensed Matter; REJUVENATION; RELAXOR FERROELECTRICS; SINGLE-CRYSTALS; TANTALATE CRYSTALS | Erscheinungsdatum: | 2004 | Herausgeber: | AMER PHYSICAL SOC | Enthalten in: | PHYSICAL REVIEW B | Band: | 70 | Ausgabe: | 13 | Zusammenfassung: | Large aging effects, investigated via temporal dependences of the dielectric response, are found to be inherent in the uniaxial ferroelectric relaxor systems SBN:Cr and SBN:Ce. The results are discussed on the basis of domain coarsening and domain-wall pinning effects. Owing to the different charge disorder induced by the Cr3+ and Ce3+ dopants, a fundamental difference between both systems is established. While SBN:Ce shows only a weak breaking of ergodicity, the SBN:Cr system experiences true ergodicity breaking. |
ISSN: | 24699950 | DOI: | 10.1103/PhysRevB.70.134108 |
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geprüft am 07.06.2024