Abstract
The structure and phase transition in lead zinc niobate (PZN) werestudied using very high resolution powder neutron diffraction between 4.2and 450 K. The structure is unequivocally rhombohedral in space groupR3m with a = 4.060 48 Å and α = 89.8693° at 4.2 K. No low symmetry phases were observed, nor was an octahedral tilting transition toR3c as occurs in some parallel systems (e.g. PZT). Within the rhombohedral structure, largeaverage ion displacements were found relative to the rather small spontaneous strains. Onheating, a transition to a cubic perovskite occurs, with a critical temperature of∼384 K.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
