Quantum theory of magnetoelectricity in rare-earth multiferroics: Nd, Sm, and Eu ferroborates

Autor:	D. I. Plokhov, A. K. Zvezdin, A. I. Popov
Rok vydání:	2013
Předmět:	Materials science Field (physics) chemistry.chemical_element Ionic bonding Condensed Matter Physics Neodymium Electronic Optical and Magnetic Materials Samarium Polarization density Electric dipole moment chemistry Quantum mechanics Multiferroics Europium
Zdroj:	Physical Review B. 87
ISSN:	1550-235X 1098-0121
DOI:	10.1103/physrevb.87.024413
Popis:	The quantum theory of magnetoelectricity in rare-earth ferroborates is developed. It is shown that the electric polarization in the materials is induced by means of two single-ion mechanisms: effective magnetic and crystal fields produce the electric dipole moment directly in the electronic $4f$ shells of rare-earth ions (the electronic contribution) and also through displacement of oppositely charged ion sublattices (the ionic one). The magnetoelectrical properties are described in detail for the neodymium, samarium, and europium ferroborates. In particular, the field and temperature dependencies of polarization are obtained.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::14f211542a2380d0a5053405f02adf50 https://doi.org/10.1103/physrevb.87.024413 Zobrazit plný text záznamu