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DTSTART:19960101T000000 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:19961027T020000 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260630T113753Z DTSTART;VALUE=DATE-TIME:20100504T130000 DTEND;VALUE=DATE-TIME:20100504T140000 SUMMARY:CMP seminar - Caloric effects in shape memory alloys TZID:Europe/London UID:20100504-094d43cd283943f50128488b15be0edb@warwick.ac.uk CREATED:20100429T074954Z DESCRIPTION:Caloric effects in shape-memory alloys LluĂ­s Mañosa Departame nt d’Estructura i Constituents de la Matèria Facultat de FĂ­sica. Univers itat de Barcelona. Catalonia. Caloric effects refer to the adiabatic tem perature change or the isothermal entropy change taking place in any the rmodynamic system on varying an external field. Although these effects a re small in a majority of systems\, they become enhanced in the vicinity of phase transitions and are particularly large at first-order phase tr ansitions. The observation of giant caloric effects around room temperat ure has prompted research in this field motivated by the potential use o f materials with such properties in efficient and environmentally friend ly refrigeration devices. Shape-memory alloys undergo a martensitic tran sition. This is a first-order structural transition which involves signi ficant entropy change. In my talk\, I will show experimental evidences o n how this transition can be induced by different external influences (s tress\, pressure and magnetic field) and give rise to a series of calori c effects\; namely the elastocaloric\, barocaloric and magnetocaloric ef fects. LOCATION:P520 CATEGORIES:Condensed Matter Physics Seminar LAST-MODIFIED:20100429T074954Z ORGANIZER;CN=Jon Duffy: END:VEVENT END:VCALENDAR