(Sr, Mn)TiO(3): A Magnetoelectric Multiglass

authors	Shvartsman, VV; Bedanta, S; Borisov, P; Kleemann, W; Tkach, A; Vilarinho, PM
nationality	International
journal	PHYSICAL REVIEW LETTERS
keywords	STRONTIUM-TITANATE CERAMICS; SPIN-GLASSES; SUSCEPTIBILITY; MEMORY
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 Mn(2+) ions are at the origin of both a polar and a spin glass with glass temperatures T(g)approximate to 38 K and <= 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 SrTiO(3), large higher order magnetoelectric coupling occurs between both glass systems.
publisher	AMER PHYSICAL SOC
issn	0031-9007
year published	2008
volume	101
issue	16
digital object identifier (doi)	10.1103/PhysRevLett.101.165704
web of science category	Physics, Multidisciplinary
subject category	Physics
unique article identifier	WOS:000260141300039