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Dielectric Properties of Sintered Yttrium Oxide
Author(s) -
HYDE GARRETT R.
Publication year - 1971
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1971.tb12201.x
Subject(s) - yttrium , dielectric , polarization (electrochemistry) , materials science , condensed matter physics , relaxation (psychology) , conductivity , frequency dependence , dipole , oxide , mineralogy , nuclear magnetic resonance , chemistry , physics , metallurgy , psychology , social psychology , optoelectronics , organic chemistry
Relaxation phenomena were observed in sintered Y 2 O 3 at frequencies from 10 −3 to 10 5 Hz at 150°, 200°, 255°, 306°, and 357°C. The observed dispersion is predicted approximately by a theory requiring exponential decay of the polarization. The theory describing the larger lower‐frequency relaxation should be based on an interfacial mechanism with an inter‐granular region of higher conductivity. Electrode effects cannot be ruled out, however, on the basis of the present work. The most probable basis for the theory describing the smaller higher‐frequency relaxation is defect‐dipole polarization.