Relaxational polarization and diffuse phase transitions of LA-substituted Pb (Zr,Ti)O3-ceramics

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Wolters, M. and Burggraaf, A.J. (1975) Relaxational polarization and diffuse phase transitions of LA-substituted Pb (Zr,Ti)O3-ceramics. Materials Research Bulletin, 10 (5). pp. 417-423. ISSN 0025-5408

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Abstract:Dielectric properties of (Pb,La)Zr0.55Ti0.45O3 ceramics have been investigated as functions of temperature and frequency. The dielectric constant as a function of temperature can be represented over a considerable temperature interval by a quadratic law of the type: ε−1=ε−1max + C(T−TC')2. The permittivity versus temperature curves are strongly broadened around TC' (where is at a maximum) and the dielectric behaviour is at least partly of a relaxational nature. Interpretation of the dielectric behaviour (broadening, frequency dependence, quadratic law) seems possible by assuming a distribution of local Curie temperatures; the standard deviation of which can be correlated with the La concentration.
Item Type:Article
Copyright:© 1975 Elsevier Science
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Link to this item:http://purl.utwente.nl/publications/68068
Official URL:http://dx.doi.org/10.1016/0025-5408(75)90013-6
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