Low temperature sintering of PMN ceramics by doping with SrO
Low temperature sintering of lead magnesium niobate (PMN) has been studied. The sintering temperature of PMN ceramics could be reduced from about 1200°C to about 800–900°C by addition of a small amount of SrO. Dense composite ceramics PMN– xSr ( x=0, 0.01, 0.02 and 0.04) with fine grains were obtain...
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Published in | Materials letters Vol. 49; no. 6; pp. 345 - 351 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
2001
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | Low temperature sintering of lead magnesium niobate (PMN) has been studied. The sintering temperature of PMN ceramics could be reduced from about 1200°C to about 800–900°C by addition of a small amount of SrO. Dense composite ceramics PMN–
xSr (
x=0, 0.01, 0.02 and 0.04) with fine grains were obtained. With the results of XRD and EMPA, the sintering mechanism, during which Sr
2+ substituted Pb
2+ at A site of ABO
3 and low-melting substance appeared, has been analyzed. Doping with SrO could reduce the size of crystal grain of PMN. The effects of SrO doping on dielectric properties have also been investigated. The maximum dielectric constant of PMN–0.02Sr sintered at 850°C was 12
000, and its loss tangent at room temperature was only 0.36%, which make it a very promising material for multilayer capacitors. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0167-577X 1873-4979 |
DOI: | 10.1016/S0167-577X(00)00397-9 |