Hong, KS Kim, IT Kim, CD 2024-01-21T19:08:17Z 2024-01-21T19:08:17Z 2022-01-11 1996-12 0002-7820 https://pubs.kist.re.kr/handle/201004/144212 The order-disorder phase formation of the complex perovskite compounds Ba(Ni1/3Nb2/3)O-3 (BNN) and Ba(Zn1/3Nb2/3)O-3 (BZN) was investigated using X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and energy-dispersive spectroscopy. The BNN and BZN samples were sintered over a temperature range of 1200 degrees to 1500 degrees C in air for 2 h. X-ray diffraction and transmission electron microscopy showed that these compounds exhibited a 1:2 ordering on the B-site within a narrow temperature range. When BNN and BZN mere sintered above 1400 degrees and 1350 degrees C, respectively, a liquid phase formed in the grain boundary which was accompanied by disordering, The composition of the liquid phase resembled that of pyrochlore, with a small amount of nickel for BNN or zinc for BZN, The disordering with the formation of the liquid phase was attributed to the increase in defect concentration. English AMER CERAMIC SOC DIELECTRIC-PROPERTIES MICROWAVE-FREQUENCIES CERAMICS FERROELECTRICS TRANSITION CATION Order-disorder phase formation in the complex perovskite compounds Ba(Ni1/3Nb2/3)O-3 and Ba(Zn1/3Nb2/3)O-3 Article 10.1111/j.1151-2916.1996.tb08098.x 1 JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.79, no.12, pp.3218 - 3224 JOURNAL OF THE AMERICAN CERAMIC SOCIETY 79 12 3218 3224 scie scopus A1996WB44300029 2-s2.0-0030414709 Materials Science, Ceramics Materials Science Article DIELECTRIC-PROPERTIES MICROWAVE-FREQUENCIES CERAMICS FERROELECTRICS TRANSITION CATION