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Effect of Li 2 O and PbO Additions on Abnormal Grain Growth in the Pb(Mg 1/3 Nb 2/3 )O 3 –35 mol% PbTiO 3 System
Author(s) -
Fisher John Gerard,
Kim MinSoo,
Lee HoYong,
Kang SukJoong L.
Publication year - 2004
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.1551-2916.2004.00937.x
Subject(s) - grain growth , sintering , dopant , materials science , analytical chemistry (journal) , grain size , mineralogy , doping , abnormal grain growth , ceramic , crystallography , nuclear chemistry , chemistry , metallurgy , optoelectronics , chromatography
Abnormal grain growth in Pb(Mg 1/3 Nb 2/3 )O 3 –35 mol% PbTiO 3 (PMN‐35PT) ceramics doped with Li 2 O and PbO has been investigated. Replacing the PbO dopant with up to 2 mol% Li 2 O caused an increase in the number of abnormal grains. For the composition containing 2 mol% Li 2 O and 6 mol% PbO, the amount of abnormal grain growth decreased with increasing sintering temperature. Single crystals of ∼6 mm × 6 mm × 2 mm thickness were grown from the 2 mol% Li 2 O, 6 mol% PbO‐containing composition via the templated grain growth method. Grain growth behavior with temperature is explained in terms of the effect of Li 2 O on interface‐reaction‐controlled grain growth and the critical driving force.