Results 31 to 40 of about 15,658 (215)

Surface phase separation in nanosized charge-ordered manganites

, 2007
Recent experiments showed that the robust charge-ordering in manganites can be weakened by reducing the grain size down to nanoscale. Weak ferromagnetism was evidenced in both nanoparticles and nanowires of charge-ordered manganites.
F. Gao, J.-M. Liu, S. Dong, Tokura Y., Z. F. Ren, Z. Q. Wang   +5 more
core   +1 more source

The Influence of Pressure on the Formation of FM/AF Configurations in LSMO Films: A Monte Carlo Approach

Computation, 2020
In this work, Monte Carlo simulations of magnetic properties of thin films, including the influence of an external pressure, are presented. These simulations were developed using a Hamiltonian composed by terms that represent the exchange interaction ...
Hugo Hernán Ortiz-Álvarez, Francy Nelly Jiménez-García, Carolina Márquez-Narváez, José Dario Agudelo-Giraldo, Elisabeth Restrepo-Parra   +4 more
doaj   +1 more source

Spin-charge and spin-orbital coupling effects on spin dynamics in ferromagnetic manganites

, 2010
Correlation-induced spin-charge and spin-orbital coupling effects on spin dynamics in ferromagnetic manganites are calculated with realistic parameters in order to provide a quantitative comparison with experimental results for spin stiffness, magnon ...
Avinash Singh, Bhaskar Kamble, Cheong S-W, Dheeraj Kumar Singh, Singh A, Singh U R, Srivastava P, Zhang J   +7 more
core   +1 more source

Phase separation in systems with charge ordering [PDF]

, 2000
A simple model of charge ordering is considered. It is shown explicitly that at any deviation from half-filling ($n \neq 1/2$) the system is unstable with respect to phase separation into charge ordered regions with $n = 1/2$ and metallic regions with ...
Kagan, M. Yu., Khomskii, D. I., Kugel, K. I.   +2 more
core   +4 more sources

Origin of the multiferroic spiral spin-order in the RMnO3 perovskites

, 2008
The origin of the spiral spin-order in perovskite multiferroic manganites $R$MnO$_{3}$ ($RE=$ Tb or Dy) is here investigated using a two $e_{\rm g}$-orbitals double-exchange model.
E. Dagotto, Elbio Dagotto, J.-M. Liu, Rong Yu, Seiji Yunoki, Shuai Dong   +5 more
core   +1 more source

Ferroelectricity in the multiferroic hexagonal manganites [PDF]

Nature Physics, 2015
A combination of nonlinear optical experiments, piezoresponse force microscopy and Monte Carlo simulations resolves the correlation between polarization, topology and temperature for the hexagonal manganite YMnO3—a persistent ferroelectrics puzzle.
Lilienblum, Martin, Lottermoser, Thomas, Manz, Sebastian, Selbach, Sverre Magnus, Cano, Andres, Fiebig, Manfred   +5 more
openaire   +2 more sources

Propriedades estruturais e microestruturais de manganitas dopadas com cobre Structural and microstructural properties of Cu-doped manganites

Química Nova, 2007
We report a structural study on polycrystalline La0.86Sr0.14Mn1-y Cu yO3+delta samples (y = 0, 0.05, 0.10, 0.15, 0.20) using refinement of powder X-ray diffraction data and analysis of scanning electron microscopy images.
Rodolfo Araujo Victor, Marcos Tadeu D'Azeredo Orlando, Jair C. C. Freitas   +2 more
doaj   +1 more source

Manganite charge and orbitally ordered and disordered states probed by Fe substitution into Mn site in LnBaMn1.96Fe0.04O5, LnBaMn1.96Fe0.04O6 and LnBaMn1.96Fe0.04O5.5 (Ln=Y, Gd, Sm, Nd, Pr, La)

, 2009
The layered manganese oxides LnBaMn1.96Fe0.04Oy (Ln=Y, Gd, Sm, Nd, Pr, La) have been synthesized for y=5, 5.5 and 6. In the oxygen-saturated state (y=6) they exhibit the charge and orbital order at ambient temperature for Ln=Y, Gd, Sm, but unordered eg ...
Akahoshi, Akahoshi, Alexandre I. Rykov, Belik, Caignaert, Caignaert, Chapman, Dollase, Er-Rakho, Kiyoshi Nomura, Millange, Millange, Nakajima, Nakajima, Nakajima, Nakajima, Nakajima, Nakajima, Pavlyuhin, Perca, Rodriguez-Carvajal, Rykov, Rykov, Rykov, Rykov, Taskin, Trukhanov, Ueda, Williams, Young, Yutaka Ueda   +30 more
core   +1 more source

Giant magnetoelectric effect in pure manganite-manganite heterostructures

Physical Review B, 2017
This version supersedes arXiv:1203 ...
Paul, Sanjukta, Pankaj, Ravindra, Yarlagadda, Sudhakar, Majumdar, Pinaki, Littlewood, Peter B.   +4 more
openaire   +4 more sources

Fast Two-stage Protector Against Electromagnetic Pulse Based on Electroresistance Effect in Polycrystalline La-Sr(Ca)-Mn-O Films

Medžiagotyra, 2014
The electroresistance (ER) effect in polycrystalline films of La0.83Sr0.17MnO3 and La0.7Ca0.3MnO3 was investigated in the temperature range of (5 – 290) K using high power sub-nanosecond rise time electrical pulses with amplitude up to 1 kV.
Laura ŽURAUSKAITĖ, Saulius BALEVIČIUS, Nerija ŽURAUSKIENĖ, Skirmantas KERŠULIS   +3 more
doaj   +1 more source