Instituto de Física Rosario
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Publications with the keyword "phase transitions"

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M. Graf, S. D. Napoli, M. Barral, L. S. Medina, R. Negri, M. Sepliarsky, and A. Llois
Rhombohedral R3c to orthorhombic Pnma phase transition induced by Y-doping in BiFeO3
Journal of Physics Condensed Matter (cited By 6), 30(28), 2018
bismuth compounds calculations doping (additives) iron compounds magnetic moments phase transitions ab initio calculations bifeo3 electric polarization electronic magnetic properties ferromagnetic response morphotropic phase boundaries structural transitions y-doping yttrium compounds
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G. Blesio, L. Manuel, P. Roura-Bas, and A. Aligia
Topological quantum phase transition between Fermi liquid phases in an Anderson impurity model
Physical Review B (cited By 1), 98(19), 2018
fermi liquids fermions liquids phase transitions quantum theory statistical mechanics anderson impurity model finite temperatures non-fermi-liquid phase numerical renormalization groups quantum phase transitions single ion anisotropy topological number two-channel kondo model topology
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P. Roca, L. Isola, P. Vermaut, and J. Malarría
Relationship between grain size and thermal hysteresis of martensitic transformations in Cu-based shape memory alloys
Scripta Materialia (cited By 11), 135, 5-9, 2017
copper alloys grain boundaries grain size shape hysteresis intermetallics metal implants phase transitions rapid solidification shape memory effect thermodynamics cu-based shape memory alloy frictional work grain size hysteresis widths martensitic phase transformations martensitic variants rapid solidification techniques thermal hysteresis martensitic transformations
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A. Lobos and S. Sarma
Tunneling transport in NSN Majorana junctions across the topological quantum phase transition
New Journal of Physics (cited By 13), 17(6), 2015
hybrid systems nanowires phase diagrams phase transitions quantum chemistry quantum theory scanning tunneling microscopy superconducting materials topology transparency transport properties bound state electrical transport properties external magnetic field non-perturbative effects quantum phase transitions semiconductor nanowire transport measurements zero bias conductance peaks semiconductor junctions
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M. Graf, M. Sepliarsky, M. Stachiotti, and S. Tinte
Development of an atomic level model for BiFeO3 from first-principles
Ferroelectrics (cited By 2), 461(1), 61-67, 2014
ferroelectricity molecular dynamics phase transitions ab initio calculations atomistic simulations first-order phase transitions molecular dynamics simulations multiferroics structural behaviors temperature behavior calculations
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O. Lambri, J. Pérez-Landazábal, V. Recarte, G. Cuello, and I. Golovin
Order controlled dislocations and grain boundary mobility in Fe-Al-Cr alloys
Journal of Alloys and Compounds (cited By 12), 537, 117-122, 2012
cr alloys elastic ranges grain-boundary mobility mechanical spectroscopy metals alloys order-disorder effects ordered state temperature intervals thermally activated aluminum chromium chromium alloys damping grain boundaries iron alloys loading mechanical properties metallurgy neutron diffraction phase transitions single crystals
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R. MacHado, M. Sepliarsky, and M. Stachiotti
Phase transitions and piezoelectric properties of SrBi2Ta 2O9 by molecular dynamics simulations
Journal of Materials Science (cited By 7), 45(18), 4912-4918, 2010
crystallographic directions experimental data ferroelectric transition first principle calculations local polarization microscopic dynamics molecular dynamics simulations non-polar paraelectric phase piezoelectric coefficient piezoelectric property shell models two phase ferroelectricity molecular dynamics piezoelectricity tantalum phase transitions
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O. Lambri, J. Pérez-Landazábal, G. Cuello, J. Cano, V. Recarte, C. Siemers, and I. Golovin
Mechanical spectroscopy in Fe-Al-Si alloys at elevated temperatures
Journal of Alloys and Compounds (cited By 16), 468(12), 96-102, 2009
aluminum crystal growth diffraction grain boundaries grain size shape iron alloys materials properties mechanical properties metallic compounds neutron diffraction phase transitions silicon silicon alloys al-si alloys degree of orders elevated temperatures grain boundary relaxations magnetically ordered materials mechanical spectroscopies order degrees order-disorder effects relaxation peaks temperature intervals order disorder transitions
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M. Sepliarsky and S. Tinte
Dynamical behavior of the phase transition of strained BaTiO3 from atomistic simulations
Physica B: Condensed Matter (cited By 7), 404(18), 2730-2732, 2009
ac phase atomistic simulations biaxial compressive strain dominant mechanism dynamical behaviors ferroelectric phase transition ferroelectric property ferroelectrics first-order in-plane lattice parameters local polarization mechanical boundaries misfit strain molecular dynamics simulations order-disorder paraelectrics second orders shell models temperature dependence ferroelectric materials ferroelectricity molecular dynamics perovskite phase transitions
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J. Lasave, J. Kohanoff, R. Migoni, and S. Koval
A shell model for the H-bonded ferroelectric KH2PO4
Physica B: Condensed Matter (cited By 10), 404(18), 2736-2738, 2009
antiferroelectrics experimental data ferroelectric first-principles first-principles calculation h-bonded ferroelectrics interaction parameters kdp metastable structures molecular dynamics simulations paraelectrics relative stabilities shell model shell models binding sites domain walls ferroelectricity finite element method hydrogen hydrogen bonds metastable phases molecular dynamics phase transitions shells (structures) solid state physics structural properties ferroelectric materials
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D. Mastrogiuseppe, M. Torio, C. Gazza, and A. Dobry
Theoretical study of the magnetism in the incommensurate phase of TiOCl
Physica B: Condensed Matter (cited By 0), 404(18), 2805-2808, 2009
atomic positions continuous transitions density matrix renormalization group dmrg first order transitions heisenberg models higher temperatures incommensurate phase low temperatures magnetic correlation microscopic models one-dimensional spin-peierls theoretical study tiocl uniform phase wave vector bromine compounds chlorine compounds domain walls spin dynamics statistical mechanics phase transitions
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J. Lasave, S. Koval, N. Dalal, and R. Migoni
Ab initio study of the microscopic mechanism leading to antiferroelectricity in NH4H2PO4 (ADP)
Ferroelectrics (cited By 1), 363(1), 13-20, 2008
ab initio study antiferroelectrics atomic displacement first-principles calculation low temperatures microscopic mechanisms mode patterns mulliken populations orbitals tetragonal crystal axis total energy antiferroelectricity atoms charge transfer density functional theory ion exchange mass transfer phase transitions
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R. MacHado, M. Sepliarsky, and M. Stachiotti
Temperature-driven phase transitions in SrBi2Ta 2O9 from first-principles calculations
Applied Physics Letters (cited By 11), 93(24), 2008
lithium batteries solid state physics tantalum aurivillius compounds dielectric responses first-principles calculations intermediate phasis nonpolar paraelectric phase transition sequences powerful tools shell models phase transitions
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O. Lambri, G. Cuello, W. Riehemann, and J. Lucioni
On the precipitation processes in commercial QE22 magnesium alloy
Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques (cited By 1), 98(6), 501-505, 2007
differential thermal analysis electric conductivity magnesium magnesium alloys phase transitions precipitation (chemical) thermoanalysis dissolution temperature electrical resistivity measurements experimental techniques guinier-preston zones mechanical spectroscopy precipitation process neutron scattering
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J. Lasave, S. Koval, N. Dalal, and R. Migoni
Origin of antiferroelectricity in NH4H2PO4 from first principles
Physical Review Letters (cited By 37), 98(26), 2007
charge transfer density functional theory ferroelectricity low temperature effects phase transitions polarization afe transition fe-afe phase coexistence ferroelectric (fe) phase first principles calculations antiferroelectricity
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A. Federico and G. Kaufmann
Phase retrieval in digital speckle pattern interferometry by application of two-dimensional active contours called snakes
Applied Optics (cited By 9), 45(9), 1909-1916, 2006
estimation fourier transforms image analysis image segmentation phase transitions fourier-transform methods orientation field phase-retrieval technique smoothing spline method interferometry
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J. Lasave, S. Koval, N. Dalal, and R. Migoni
First-principles determination of Slater and Takagi defect properties in KDP
Ferroelectrics (cited By 0), 333, 47-56, 2006
crystal defects crystals electron energy levels electronic structure estimation lattice constants phase transitions shrinkage defect energy first-principles calculations formation energy kdp takagi defect ferroelectric materials
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S. Figueroa, J. Desimoni, P. Rivas, M. Caracoche, and O. D. Sanctis
Local structures in the ZrO2-15 mol% Fe2O3 system obtained by ball milling
Journal of the American Ceramic Society (cited By 14), 89(12), 3759-3764, 2006
comminution electric fields mossbauer spectroscopy phase transitions rapid thermal annealing solubility thermodynamic stability zirconium compounds iron solubility tetragonal crystalline zirconia lattice zirconia transformation crystal structure
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R. Portier, P. Vermaut, F. Prima, P. Ochin, A. Pasko, V. Kolomytsev, A. Sezonenko, J. Pons, et al.
Characterization and properties of Shape Memory Alloys elaborated by non conventional techniques
Proceedings of an International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005 (cited By 0), 2, 187-204, 2005
amorphous alloys brittleness ductility martensitic transformations microstructure phase transitions solidification high transformation temperatures planar flow casting production technologies shape memory effect
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G. Colizzi, J. Kohanoff, J. Lasave, S. Koval, and R. Migoni
Ab-initio investigations of pressure effects on the ferroelectric instabilities in KDP and DKDP
Ferroelectrics (cited By 4), 301, 61-64, 2004
mathematical models phase transitions polarization pressure effects double-well model isotope effect kdp transition temperature ferroelectric materials
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J. Feugeas, L. Nosei, M. Avalos, B. Gómez, L. Nachez, A. Guiguet, and Y. Craievich
Stability and microhardness of expanded austenite in ion nitrided WNR 1.4882 steel [Estabilidad y microdureza de la austenita expandida en acero W Nr 1.4882 nitrurado iónicamente]
Revista de la Facultad de Ingenieria (cited By 0), 18(2), 25-29, 2003
austenite corrosion resistance ion bombardment microhardness microscopic examination nitriding phase diagrams phase transitions tribology x ray diffraction analysis expanded austenite ion nitriding steel
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I. Nikitin, W. Dong, H. Busnengo, and A. Salin
Diffusion of a hydrogen atom on the Pd(1 1 1) surface: Quantum transition state wave packet approach
Surface Science (cited By 7), 547(12), 149-156, 2003
adsorption computer simulation palladium phase transitions potential energy quantum theory scanning tunneling microscopy substrates quantum transition state wave packets diffusion
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A. Trumper and C. Gazza
Dimensional crossover in alternating spin chains
Physica B: Condensed Matter (cited By 1), 320(14), 340-342, 2002
correlation methods ground state magnetic couplings phase transitions spin wave (sw) theory antiferromagnetism
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S. Tinte and M. Stachiotti
Atomic-level simulation of perroelectricity in BaTiO3 ultrathin films
Integrated Ferroelectrics (cited By 1), 38(14), 91-100, 2001
atomic force microscopy barium compounds computer simulation ferroelectricity phase transitions atomistic modeling domain structures ultrathin films
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O. Lambri, A. M. Alcain, G. Lambri, A. Peñaloza, M. Ortiz, C. Wörner, and E. Bocanegra
Precipitation processes in a Cu-18 at%Li alloy produced by electrodeposition
Materials Transactions, JIM (cited By 10), 40(1), 72-77, 1999
age hardening binary alloys damping differential scanning calorimetry electrodeposition metallographic microstructure phase transitions precipitation (chemical) thermoelectricity thermogravimetric analysis x ray diffraction analysis copper lithium alloys copper alloys
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M. Sepliarsky, M. Stachiotti, R. Migoni, and C. Rodriguez
Dynamic mechanisms of the structural phase transitions in KNbO3: molecular dynamics simulations
Ferroelectrics (cited By 14), 234(1), 9-27, 1999
computer simulation ferroelectricity mathematical models molecular dynamics particles (particulate matter) phase diagrams phase transitions pressure effects temperature atomistic modeling dominant driving mechanism first principles total energy calculation paraelectric phase potassium niobate shell model structural phase transition potassium compounds
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J. Feugeas, J. Hermida, B. Gomez, G. Kellermann, and A. Craievich
In situ synchrotron radiation diffraction study of low carbon steel during ion nitriding
Journal of Physics D: Applied Physics (cited By 13), 32(17), 2228-2235, 1999
diffusion in solids electric discharges electromagnetic wave diffraction ion implantation iron compounds lattice constants nitrides nitriding phase transitions stoichiometry x ray diffraction ion nitriding iron nitrides carbon steel
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M. Sepliarsky, R. Migoni, and M. Stachiotti
Ab initio supported model simulations of ferroelectric perovskites
Computational Materials Science (cited By 9), 10(14), 51-56, 1998
barium titanate computer simulation phase transitions quantum theory ab initio methods perovskites ferroelectric materials
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P. Rivas, M. Caracoche, J. Martinez, A. Rodríguez, R. Caruso, N. Pellegri, and O. D. Sanctis
Phase structure and thermal evolution in coatings and powders obtained by the sol-gel process: Part I. ZrO2-11.3 mol % Y2O3
Journal of Materials Research (cited By 19), 12(2), 493-500, 1997
activation energy ceramic coatings oxygen phase transitions powder metals sol-gels thermal effects yttrium compounds metastable cubic phase perturbed angular correlation spectroscopy (pac) yttria stabilized cubic zirconia zirconia
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J. Arderius, M. Lara, and D. Tarzia
Experimental-numerical determination of thermal coefficients through a phase-change process
International Communications in Heat and Mass Transfer (cited By 4), 23(5), 745-754, 1996
density (specific gravity) mathematical models numerical methods phase transitions specific heat thermal conductivity thermal variables measurement latent heat of fusion mass density semi infinite materials thermal coefficients heat transfer coefficients
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M. Sepliarsky, M. Stachiotti, and R. Migoni
Model potential for the ferroelectric ABO3 perovskites
Ferroelectrics (cited By 0), 186(14), 69-72, 1996
mathematical models perovskite phase transitions potassium compounds atomic distortions nonlinear shell model ferroelectric materials
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M. Sepliarsky, R. Migoni, and M. Stachiotti
Molecular dynamics simulation of KNbO3 : Relaxational dynamics and precursor domains
Ferroelectrics (cited By 2), 183(14), 105-114, 1996
molecular dynamics phase transitions relaxation processes simulation ab-initio calculations potassium niobate ferroelectric materials
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S. Koval and R. Migoni
Lattice dynamics of the infinite-layered compounds
Physica C: Superconductivity and its Applications (cited By 2), 257(34), 255-263, 1996
chemical bonds composition effects electronic density of states lattice vibrations mathematical models oxide superconductors phase transitions phonons strontium compounds calcium strontium copper oxide infinite layered compounds phonon dispersion relations strontium neodymium copper oxide high temperature superconductors
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M. Stachiotti, A. Dobry, R. Migoni, and A. Bussmann-Holder
Particle dynamics in the vicinity of a ferroelectric phase transition
Ferroelectrics (cited By 0), 153(1), 195-200, 1994
anisotropy high temperature effects lattice vibrations molecular vibrations perovskite phase transitions polarization relaxation processes ferroelectric phase transition local particle dynamics nonlinear polarizability model particle dynamics ferroelectric materials
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M. Stachiotti and R. Migoni
Low-temperature phase in lixk1-xtao3
Ferroelectrics (cited By 4), 157(1), 335-340, 1994
crystal defects crystal lattices glass low temperature phenomena mathematical models perovskite phase transitions polarization substitution reactions electric dipole nonlinear shell model lithium compounds
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