Zobrazeno 1 - 7
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pro vyhledávání: '"Buitrago, Ivon R."'
CaCu$_3$Fe$_4$O$_{12}$ exhibits a temperature-induced transition from a ferrimagnetic-insulating phase, in which Fe appears charge disproportionated, as Fe$^{3+}$ and Fe$^{5+}$, to a paramagnetic-metallic phase at temperatures above 210 K, with Fe$^{
Externí odkaz:
http://arxiv.org/abs/1804.05726
Autor:
Buitrago, Ivon R., Ventura, Cecilia I.
The perovskite nickelates RNiO$_3$ (R: rare-earth) have been studied as potential multiferroic compounds. A certain degree of charge disproportionation in the Ni ions has been confirmed by high resolution synchrotron power diffraction: instead of the
Externí odkaz:
http://arxiv.org/abs/1503.06102
The ground state of half-doped manganites involves intricate spin, charge and orbital orderings, which are difficult to discern experimentally. In this work, we resort to the theoretical analysis of the spin fluctuation spectrum of the half-doped bil
Externí odkaz:
http://arxiv.org/abs/1403.0971
At half doping, the ground state of three-dimensional manganite perovskite oxides like R$_{1-x}$Ca$_x$MnO$_3$, where R is a trivalent ion such as La, Pr, etc, is still unclear. Many experimental findings agree better with the combined magnetic, charg
Externí odkaz:
http://arxiv.org/abs/1310.6954
Autor:
Buitrago, Ivon R., Ventura, C. I.
Publikováno v:
Journal of Superconductivity and Novel Magnetism: Volume 26, Issue 6 (2013), Page 2303-2305
We investigate magnetic excitations in half-doped colossal magnetoresistance manganites. In particular, we focus on spin excitations in the CE phase originally proposed by Goodenough (Phys. Rev. 100, 564 (1955)). Using a localized spin model we calcu
Externí odkaz:
http://arxiv.org/abs/1310.6714
Publikováno v:
Journal of Applied Physics; 2018, Vol. 124 Issue 4, pN.PAG-N.PAG, 9p, 1 Diagram, 11 Graphs
Publikováno v:
IEEE Transactions on Magnetics. Jun2014 Part 2, Vol. 50 Issue 6, p1-1. 1p.