Strain-driven structure-ferroelectricity relationship in hexagonal TbMnO3 films
نویسندگان
چکیده
منابع مشابه
Ferroelectricity in strain-free SrTiO3 thin films.
Biaxial strain is known to induce ferroelectricity in thin films of nominally nonferroelectric materials such as SrTiO3. By a direct comparison of the strained and strain-free SrTiO3 films using dielectric, ferroelectric, Raman, nonlinear optical and nanoscale piezoelectric property measurements, we conclude that all SrTiO3 films and bulk crystals are relaxor ferroelectrics, and the role of str...
متن کاملStability of spin-driven ferroelectricity in the thin-film limit: Coupling of magnetic and electric order in multiferroic TbMnO3 films
Artur Glavic,1,* Carsten Becher,2 Jörg Voigt,1 Enrico Schierle,3 Eugen Weschke,3 Manfred Fiebig,2 and Thomas Brückel1 1Jülich Centre for Neutron Science and Peter Grünberg Institut, JARA-FIT, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany 2Department of Materials, ETH Zurich, Wolfgang-Pauli Strasse 10, CH-8093 Zurich, Switzerland 3Helmholtz-Zentrum Berlin für Materialien und Energie, Elek...
متن کاملFirst principles study of improper ferroelectricity in TbMnO3.
We carry out a first-principles theoretical study of the magnetically induced polarization in orthorhombic TbMnO3, a prototypical material in which a cycloidal-spin structure generates an electric polarization via the spin-orbit interaction. We compute both the electronic and the lattice-mediated contributions to the polarization and find that the latter is strongly dominant. We analyze the spi...
متن کاملFirst-principles theory of magnetically induced ferroelectricity in TbMnO3
We study the polarization induced via spin-orbit interaction by a magnetic cycloidal order in orthorhombic TbMnO3 using first-principle methods. The case of magnetic spiral lying in the bc plane is analyzed, in which the pure electronic contribution to the polarization is shown to be small. We focus our attention on the lattice-mediated contribution, and study it’s dependence on the Coulomb int...
متن کاملMagnetic inversion symmetry breaking and ferroelectricity in TbMnO3.
TbMnO3 is an orthorhombic insulator where incommensurate spin order for temperature T(N)<41 K is accompanied by ferroelectric order for T<28 K. To understand this, we establish the magnetic structure above and below the ferroelectric transition using neutron diffraction. In the paraelectric phase, the spin structure is incommensurate and longitudinally modulated. In the ferroelectric phase, how...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2020
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.102.104106