A multiferroic material to search for the permanent electric dipole moment of the electron

Abstract

We describe the first-principles design and subsequent synthesis of a new material with the specific functionalities required for a solid-state-based search for the permanent electric dipole moment of the electron. We show computationally that perovskite-structure europium barium titanate should exhibit the required large and pressure-dependent ferroelectric polarization, local magnetic moments and absence of magnetic ordering at liquid-helium temperature. Subsequent synthesis and characterization of Eu(0.5)Ba(0.5)TiO(3) ceramics confirm the predicted desirable properties.

Giant magnetocaloric effect in magnetoelectric Eu1-xBaxTiO3

“…13 Nearly four decades ago, D. L. Janes et al 14 suggested that the solid solution Eu 0.5 Ba 0.5 TiO 3 would be simultaneously ferroelectric and ferromagnetic. In recent experiments, K. Z. Rushchanskii et al 15 found ferroelectric hysteresis loop around 130 K and antiferromagnetism below T N = 1.9 K in the same composition. While H. Wu et al 16 investigated theortically the intrinsic coupling between magnetism and dielectric properties in Eu 1-x Ba x TiO 3 (0 ≤ x ≤ 0.2), T. Wei et al 17 reported dielectric constant and electrical polarization in polycrystalline samples (0 ≤ x ≤ 1).…”

Magnetodielectric effect and phonon properties of compressively strained EuTiO3thin films deposited on (001)(LaAlO3)0.29Kamba1, Goian2, Орлита3 et al. 2012Phys. Rev. BSelf Cite220181View full textAdd to dashboardCite

“…Recently, it was theoretically predicted that EuTiO 3 has antiferrodistorted ground state. 5,6 Experimental studies show that at room temperature the crystal structure is cubic P m3m perovskite, 7 which transforms to tetragonal I4/mcm structure near 280 K.…”

Synthesis, Crystal Structure, Polymorphism, and Magnetism of Eu(CN3H4)2 and First Evidence of EuC(NH)3

“…Within the recent decades, several technological innovations disrupted the rare-earth market [2], in turn stimulating the scientific quest for future materials. One vibrant field is the study of Eu 2+ compounds whose complex crystal structures are coupled with application-relevant properties including, to name only some recent examples, luminescence [3][4][5][6], field-induced reversal of the magnetoresistive effect [7], and complex magnetism [8,9]. The most renowned magnetic compounds are the europium chalcogenides that are considered ideal 3D Heisenberg systems [10].…”