X-Ray Diffraction and Zn K-Edge XANES Studies of Perovskite Ferroelectric PZT-PZN Powders Derived from Zn2Nb34O87 Precursor. (19th February 2016)

• Record Type: Journal Article
• Authors: Amonpattaratkit, Penphitcha; Klysubun, Wantana; Ananta, Supon
• Is Part Of: Ferroelectrics. Volume 492(2016)
• Page Start: 25
• Page End: 34
• Publication Date: 2016-02-19
• Subjects: PZT -- Powders-solid state reaction -- Perovskites -- Calcination -- XANES; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2015.1069914
• Languages: English
• ISSNs: 0015-0193

Abstract

Abstract : An approach to synthesize perovskite ferroelectric 0.9Pb(Zr0.44 Ti0.56 )O3 -0.1Pb(Zn0.33 Nb0.67 )O3 or 0.9PZT-0.1PZN powders with a modified mixed-oxide synthetic route via a combination of the perovskite PZT phase stabilizer and the novel intermediate phase of Zn2 Nb34 O87 B-site has been developed. Phase formation, morphology, particle size, chemical composition and oxidation state of the products were investigated as a function of calcination temperatures. It has been found that the pyrochlore phase of Pb3 Nb4 O13 tends to form together with the perovskite phase of PZT-PZN, depending on calcination temperatures. It is seen that optimization of calcination condition can lead to a 100% yield of PZT-PZN in a tetragonal perovskite phase. The tetragonality factor, degree of agglomeration, crystallite size and average particle size tend to increase with the calcination temperatures. In addition, the synchrotron X-ray absorption near edge structure (XANES) analysis showed the oxidation state of Zn 2+ atoms for all condition of 0.9PZT-0.1PZN powders.