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Dense YMn 2 O 5 Ceramics Prepared by Spark Plasma Sintering
Author(s) -
Gao Yuan,
Wu Yong Jun,
Chen Xiang Ming,
Cheng Ji Peng,
Lin Yi Qi,
Ma Yan
Publication year - 2008
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.1551-2916.2008.02671.x
Subject(s) - spark plasma sintering , orthorhombic crystal system , materials science , ceramic , sintering , phase (matter) , hexagonal crystal system , analytical chemistry (journal) , crystallography , metallurgy , crystal structure , chemistry , organic chemistry , chromatography
Dense multiferroic YMn 2 O 5 ceramics with a single orthorhombic phase are quite difficult to prepare because the orthorhombic phase decomposes at about 1180°C. In this study, spark plasma sintering (SPS) was investigated to synthesize YMn 2 O 5 ceramics. The sample sintered at 900°C for 5 min by SPS consisted of the main orthorhombic YMn 2 O 5 phase and a small amount of hexagonal YMnO 3 phase and Mn 3 O 4 . After heat treatment at 1100°C for 9 h, YMn 2 O 5 ceramics in a single orthorhombic phase with a relative density of 94% were obtained. The results suggested that SPS is a promising process for preparing ceramics whose optimal sintering temperatures are higher than their decomposition temperatures.