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1.
Origin of magnetic and magnetoelastic tweedlike precursor modulations in ferroic materials.
Saxena, A; Castán, T; Planes, A; Porta, M; Kishi, Y; Lograsso, T A; Viehland, D; Wuttig, M; De Graef, M.
Phys Rev Lett ; 92(19): 197203, 2004 May 14.
Article in English | MEDLINE | ID: mdl-15169443

ABSTRACT

Based on experimental observations of modulated magnetic patterns in a Co0.5Ni0.205Ga0.295 alloy, we propose a model to describe a (purely) magnetic tweed and a magnetoelastic tweed. The former arises above the Curie (or Néel) temperature due to magnetic disorder. The latter results from compositional fluctuations coupling to strain and then to magnetism through the magnetoelastic interaction above the structural transition temperature. We discuss the origin of purely magnetic and magnetoelastic precursor modulations and their experimental thermodynamic signatures.

2.
Monte Carlo study of the domain growth in nonstoichiometric two-dimensional binary alloys.
Porta M; Castán T.
Phys Rev B Condens Matter ; 54(1): 166-177, 1996 Jul 01.
Article in English | MEDLINE | ID: mdl-9984243
3.
Degenerate Blume-Emery-Griffiths model for the martensitic transformation.
Vives E; Castán T; Lindgård PA.
Phys Rev B Condens Matter ; 53(14): 8915-8921, 1996 Apr 01.
Article in English | MEDLINE | ID: mdl-9982393
4.
Comment on "Kinetics of spinodal decomposition in the Ising model with vacancy diffusion"
Frontera C; Vives E; Castán T; Planes A.
Phys Rev B Condens Matter ; 53(5): 2886-2889, 1996 Feb 01.
Article in English | MEDLINE | ID: mdl-9983802
5.
Monte Carlo simulation of interface alloying.
Frontera C; Vives E; Castán T; Planes A.
Phys Rev B Condens Matter ; 51(17): 11369-11375, 1995 May 01.
Article in English | MEDLINE | ID: mdl-9977865
6.
Spin-glass nature of tweed precursors in martensitic transformations.
Kartha S; Castán T; Krumhansl JA; Sethna JP.
Phys Rev Lett ; 67(25): 3630-3633, 1991 Dec 16.
Article in English | MEDLINE | ID: mdl-10044784
7.
Diffusionless first-order phase transitions in systems with frozen configurational degrees of freedom.
Planes A; Vives E; Castán T.
Phys Rev B Condens Matter ; 44(13): 6715-6722, 1991 Oct 01.
Article in English | MEDLINE | ID: mdl-9998544
8.
Domain-growth kinetics and aspects of pinning: A Monte Carlo simulation study.
Castán T; Lindgrd PA.
Phys Rev B Condens Matter ; 43(1): 956-964, 1991 Jan 01.
Article in English | MEDLINE | ID: mdl-9996290
9.
Kinetics of slow domain growth: The n=1/4 universality class.
Lindgård PA; Castán T.
Phys Rev B Condens Matter ; 41(7): 4659-4662, 1990 Mar 01.
Article in English | MEDLINE | ID: mdl-9994293
10.
n=(1/4 domain-growth universality class: Crossover to the n=(1/2 class.
Castán T; Lindgård P.
Phys Rev B Condens Matter ; 41(4): 2534-2536, 1990 Feb 01.
Article in English | MEDLINE | ID: mdl-9993995
11.
Kinetics of domain growth, theory, and Monte Carlo simulations: A two-dimensional martensitic phase transition model system.
Castán T; Lindgård PA.
Phys Rev B Condens Matter ; 40(7): 5069-5083, 1989 Sep 01.
Article in English | MEDLINE | ID: mdl-9992507
12.
Elastic constants of the beta -Cu-Zn alloy system: A Monte Carlo study.
Castán T; Planes A; Ramos A; Vials J.
Phys Rev B Condens Matter ; 39(6): 3551-3553, 1989 Feb 15.
Article in English | MEDLINE | ID: mdl-9948670
13.
Elastic constants of bcc shape-memory binary alloys: Effect of the configurational ordering.
Castán T; Planes A.
Phys Rev B Condens Matter ; 38(12): 7959-7965, 1988 Oct 15.
Article in English | MEDLINE | ID: mdl-9945542
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