Results 11 to 20 of about 1,009,075 (346)

Origin of Multiferroism of β-NaFeO₂

Magnetochemistry, 2022
The multiferroic β-NaFeO2 is theoretically investigated for the first time using a microscopic model and Green’s function technique. A small room-temperature ferromagnetism is observed, which could be explained by canting of the antiferromagnetic ...
Iliana Naumova Apostolova, Angel Todorov Apostolov, Julia Mihailowa Wesselinowa   +2 more
doaj   +1 more source

An Experiment-Based Study of Formation Damage Using a Microetching Model Displacement Method

Micromachines, 2022
In the field of oil and gas exploration, drilling fluid is regarded as the essential “blood” for drilling, which mainly helps to control the formation pressure and remove cuttings from the well.
Feng Wu, Jin Dai, Lei Shi, Lin Fan, Yao Guan, Yuhan Li, Qinghui Wang, Chunchao Chen   +7 more
doaj   +1 more source

Magnetization, Band Gap and Specific Heat of Pure and Ion Doped MnFe₂O₄ Nanoparticles

Magnetochemistry, 2023
We have studied the magnetic properties of ion doped MnFe2O4 nanoparticles with the help of a modified Heisenberg model and Green’s function theory taking into account all correlation functions.
I. N. Apostolova, A. T. Apostolov, J. M. Wesselinowa   +2 more
doaj   +1 more source

Magnetoelectric Coupling Effects in Tb-Doped BiFeO₃ Nanoparticles

Magnetochemistry, 2023
The magnetic, electric, and optical properties in Tb-doped BiFeO3 nanoparticles as functions of size and doping concentrations were investigated using a microscopic model, taking into account both linear and quadratic magnetoelectric (ME) coupling.
Iliana Apostolova, Angel Apostolov, Julia Wesselinowa   +2 more
doaj   +1 more source

Microscopic Cluster Model for Exotic Nuclei [PDF]

, 2006
For a better understanding of the dynamics of exotic nuclei it is of crucial importance to develop a practical microscopic theory easy to be applied to a wide range of masses.
Ajzenberg-Selove, Baranger, Bogner, Brown, Brückner, D. Ursescu, de Jager, Fujii, Fujii, Imai, Jewel, Jiang, Kuo, Kuo, Lacombe, Lassila, M. Tomaselli, Machleidt, Machleidt, Millener, Moszkowski, Raman, Shakin, Shakin, Shakin, T. Kühl, Tomaselli, Tomaselli, Tomaselli, Tomaselli, Villars   +30 more
core   +5 more sources

GAUSSIAN FLUCTUATIONS OF POLARIZATION IN THE REGION OF PHASE TRANSITIONS IN DMAGAS-DMAALS FERROELECTRICS IN THE FRAMEWORK OF THE FOUR-STATE MODEL

Condensed Matter Physics, 2004
A description of thermodynamics of the DMAGaS-DMAAlS family ferroelectrics improved by taking into account the Gaussian fluctuations of polarization is presented. Fluctuations become important in the vicinity of the second order (or the first order close
I.V.Stasyuk, O.V.Velychko
doaj   +1 more source

Microscopic Model for Thin Film Spreading [PDF]

Physical Review Letters, 2002
A microscopic, driven lattice gas model is proposed for the dynamics and spatio-temporal fluctuations of the precursor film observed in spreading experiments. Matter is transported both by holes and particles, and the distribution of each can be described by driven diffusion with a moving boundary.
Abraham, D, Cuerno, R, Moro, E
openaire   +5 more sources

Modeling of the Partial Discharge Process in a Liquid Dielectric: Effect of Applied Voltage, Gap Distance, and Electrode Type

Energies, 2013
The partial discharge (PD) process in liquid dielectrics is influenced by several factors. Although the PD current contains the information representing the discharge process during the PD event, it is difficult to determine the detailed dynamics of what
Tao Yuan, Qing Yang, Chilong Jiang, Wenxia Sima, Paul Lewin   +4 more
doaj   +1 more source

Multi-step particle emission probabilities in superheavy nuclei at moderate excitation energies

Physics Letters B, 2023
The probabilities of xn-, pxn-, and αxn-evaporation channels in excited superheavy nuclei were evaluated using the Monte Carlo method. The calculations utilized microscopically determined nuclear level densities and were compared with results obtained ...
A. Rahmatinejad, T.M. Shneidman, G.G. Adamian, N.V. Antonenko, P. Jachimowicz, M. Kowal   +5 more
doaj   +1 more source

Microscopic Abrams-Strogatz model of language competition [PDF]

, 2006
The differential equations of Abrams and Strogatz for the competition between two languages are compared with agent-based Monte Carlo simulations for fully connected networks as well as for lattices in one, two and three dimensions, with up to 10^9 ...
Castello, Xavier, Eguiluz, Victor M., Miguel, Maxi San, Stauffer, Dietrich   +3 more
core   +3 more sources