title: (Sr,Mn)TiO3: a magnetoelectric multiglass.
abstract: By close analogy with multiferroic materials with coexisting long-range electric and magnetic orders a "multiglass" scenario of two different glassy states is observed in Sr(0.98)Mn(0.02)TiO(3) ceramics. Sr-site substituted Mn2+ ions are at the origin of both a polar and a spin glass with glass temperatures T(g) approximately equal to 38 K and < or =34 K, respectively. The structural freezing triggers that of the spins, and both glassy systems show individual memory effects. Thanks to strong spin-phonon interaction within the incipient ferroelectric host crystal SrTiO3, large higher order magnetoelectric coupling occurs between both glass systems.
authors.affiliation: Angewandte Physik, Universität Duisburg-Essen, Lotharstrasse 1, Duisburg, Germany.
authors.forename: V V
authors.initials: VV
authors.lastname: Shvartsman
authors.forename: S
authors.initials: S
authors.lastname: Bedanta
authors.forename: P
authors.initials: P
authors.lastname: Borisov
authors.forename: W
authors.initials: W
authors.lastname: Kleemann
authors.forename: A
authors.initials: A
authors.lastname: Tkach
authors.forename: P M
authors.initials: PM
authors.lastname: Vilarinho