Doping effects on trimerization and magnetoelectric coupling of single crystal multiferroic (Y,Lu)MnO₃

Abstract

Hexagonal RMnO 3 is a multiferroic compound with a giant spin-lattice coupling at an antiferromagnetic transition temperature [1]. Despite extensive studies over the past two decades, however, the origin and underlying microscopic mechanism of the strong spin-lattice coupling remain still very much elusive. In this study, we have tried to address this problem by measuring the thermal expansion and dielectric constant of doped single crystals

Hybridization and Decay of Magnetic Excitations in Two-Dimensional Triangular Lattice Antiferromagnets

“…In this context, one of the key issues is the correlation between spin and lattice degrees of freedom, and thus studying the spinlattice coupling is important for uncovering the underlying microscopic mechanisms in these intriguing multiferroic materials. As such, the experimental evidence of the spin-lattice coupling has been previously observed in a series of experiments: X-ray and neutron diffraction, [133][134][135][136][137] Raman and infrared optical spectroscopy, [138][139][140][141][142][143][144][145][146] thermal conductivity, 147,148 elastic moduli, 77,78 and thermal expansion 7,149 measurements.…”

Preparation and characterization of YMnO3 thin films by metal–organic decomposition

“…Memory using multiferroic materials is expected to be one of the ways to solve those problems. [1][2][3][4][5][6][7][8][9][10] However, it is necessary to understand multiferroic materials' physical properties and establish techniques to control them. Hexagonal rare-earth manganese oxides RMnO 3 (R = Ho, Er, Tm, Lu, Y) exhibit magnetoelectric effects.…”