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11 papers · 2 filters
Stability of the Ni sites across the pressure-induced metallization in YNiO3
A. Y. Ramos, C. Piamonteze, H. C. N. Tolentino +7
The local environment of nickel atoms in Y NiO3 across the pressure- induced insulator to metal (IM) transition was studied using X-ray absorption spectroscopy (XAS) supported by a…
Competing Ferri- and Antiferromagnetic Phases in Geometrically Frustrated LuFe2O4
J. de Groot, K. Marty, M. D. Lumsden +12
We present a detailed study of magnetism in LuFe2O4, combining magnetization measurements with neutron and soft x-ray diffraction. The magnetic phase diagram in the vicinity of T_N…
On the role of intrinsic disorder in the structural phase transition of magnetoelectric EuTiO3
Mattia Allieta, Marco Scavini, Leszek Spalek +6
Up to now the crystallographic structure of the magnetoelectric perovskite EuTiO3 was considered to remain cubic down to low temperature. Here we present high resolution synchrotro…
Origin of the large polarization in multiferroic YMnO thin films revealed by soft and hard x-ray diffraction
H. Wadati, J. Okamoto, M. Garganourakis +9
We investigated the magnetic structure of an orthorhombic YMnO3 thin film by resonant soft x-ray and hard x-ray diffraction. We observed a temperature-dependent incommensurate magn…
Two-Spinon and Orbital Excitations of the Spin-Peierls System TiOCl
Sebastian Glawion, Jakoba Heidler, Maurits W. Haverkort +8
We combine high-resolution resonant inelastic x-ray scattering with cluster calculations utilizing a recently derived effective magnetic scattering operator to analyze the polariza…
Entanglement of charge transfer, hole doping, exchange interaction and octahedron tilting angle and their influence on the conductivity of La1-xSrxFe0.75Ni0.25O3-δ: A combination of x-ray spectroscopy and diffraction
Selma Erat, Artur Braun, Cinthia Piamonteze +5
Substitution of La by Sr in the 25% Ni doped charge transfer insulator LaFeO3 creates structural changes that inflect the electrical conductivity caused by small polaron hopping vi…