title: Avalanche correlations in the martensitic transition of a Cu-Zn-Al shape memory alloy: analysis of acoustic emission and calorimetry.
abstract: The existence of temporal correlations during the intermittent dynamics of a thermally driven structural phase transition is studied in a Cu-Zn-Al alloy. The sequence of avalanches is observed by means of two techniques: acoustic emission and high sensitivity calorimetry. Both methods reveal the existence of event clustering in a way that is equivalent to the Omori correlations between aftershocks in earthquakes as are commonly used in seismology.
authors.affiliation: Departament d'Estructura i Constituents de la Matèria, Facultat de Física, Universitat de Barcelona, Diagonal, 647, E-08028 Barcelona, Catalonia, Spain.
authors.forename: Jordi
authors.initials: J
authors.lastname: Baró
authors.forename: José-María
authors.initials: JM
authors.lastname: Martín-Olalla
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: Romero
authors.forename: María Carmen
authors.initials: MC
authors.lastname: Gallardo
authors.forename: Ekhard K H
authors.initials: EK
authors.lastname: Salje
authors.forename: Eduard
authors.initials: E
authors.lastname: Vives
authors.forename: Antoni
authors.initials: A
authors.lastname: Planes
mesh_terms: D000162:Acoustics; D000497:Alloys / Q000737:chemistry*; D002151:Calorimetry; D003300:Copper / Q000737:chemistry*; D003722:Dental Alloys / Q000737:chemistry*; D055119:Elastic Modulus; D008422:Materials Testing; D044367:Phase Transition; D013223:Statistics as Topic; D015032:Zinc / Q000737:chemistry*
chemical_list: D000497:Alloys; D003722:Dental Alloys; C093824:Martensite; D003300:Copper; D015032:Zinc