Superdipole glass ground state of relaxor ferroelectrics. Issue 1 (14th July 2016)

• Record Type: Journal Article
• Authors: Kleemann, Wolfgang; Dec, Jan; Miga, Seweryn
• Is Part Of: Ferroelectrics. Volume 499:Issue 1(2016)
• Page Start: 72
• Page End: 75
• Publication Date: 2016-07-14
• Subjects: Relaxor ferroelectrics -- random fields -- polar nanoregions -- superdipole glass -- dynamic criticality -- non-ergodicity -- aging -- rejuvenation; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2016.1171994
• Languages: English
• ISSNs: 0015-0193

Abstract

ABSTRACT: Quenched random fields (RFs) are well-known to be a basic driving force of the peculiar behavior of relaxor ferroelectrics such as PbMg1/3 Nb2/3 O3 (PMN), Srx Ba1-x Nb2 O6 (SBN), and BaTi1-x Zrx O3 (BTZ), hence, giving rise to strong frequency dispersion of the dielectric response, an apparent lack of macroscopic symmetry breaking at low temperatures, and the formation of polar nanoregions (PNRs) thus creating random 'domain states'. A fundamental completion of relaxor physics toward a superdipolar cluster glass ground state of the randomly interacting PNRs appears necessary as evidenced by dynamic criticality and non-ergodic aging and rejuvenation processes.