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BEGIN:VEVENT
DTSTAMP:20260629T002659Z
DTSTART;VALUE=DATE-TIME:20120523T163000
DTEND;VALUE=DATE-TIME:20120523T180000
SUMMARY:Departmental Colloquium - Karl Sandeman - Phasing Out The F Gas F
 ridge
TZID:Europe/London
UID:20120523-094d43a236eeb4fb01373643a7ac521f@warwick.ac.uk
CREATED:20120510T102032Z
DESCRIPTION:Phasing Out The F Gas Fridge\, Wednesday 23rd May\, Dept of P
 hysics Karl G. Sandeman Department of Physics\, Imperial College London\
 , United Kingdom The fundamental understanding of solid-state phase tran
 sitions is crucial to technological innovation. To the most well-known p
 hase transition technologies – colossal magnetoresistance\, shape memory
 \, phase change memory\, and thermochromic coatings – we need to add mag
 netic cooling. In the last ten years\, research on magnetic phase change
 s at room temperature has exploded as materials physicists have been dra
 wn to the problem of developing efficient solid-state gas-free refrigera
 tion [1]. This talk will outline the most significant advances in the ph
 ysics of magnetic refrigerants and will show that the question of what m
 akes an ideal material naturally leads to an investigation of tricritica
 l magneto-elastic phase transitions [2]. By using Mn-based helical metam
 agnets as a test case\, ab initio material modeling and advanced charact
 erisation tools can be shown to provide ways of controlling and optimisi
 ng magnetic phase transitions for future application [3]. The research l
 eading to these results has received funding from the European Community
 ’s 7th Framework Programme under grant agreement No. 214864 ("SSEEC"). K
 GS acknowledges financial support from the Royal Society. References [1]
  A. Turley\, Chemistry World 9 48 (2012). [2] K.G. Sandeman\, Scripta Ma
 terialia in press (2012) doi: 10.1016/j.scriptamat.2012.02.045 [3] A. Ba
 rcza et al.\, Phys. Rev. Lett. 104 247202 (2010). Speaker biography Karl
  Sandeman is a Lecturer and Royal Society University Research Fellow in 
 the Department of Physics at Imperial College London. He received his un
 dergraduate degree (Natural Sciences) and PhD (Low Temperature Condensed
  Matter Theory) from the University of Cambridge and
researches room tem
 perature phase transitions. He is currently co-editing a book\, Magnetic
  Cooling: From Fundamentals to High Efficiency Refrigeration\, with Oliv
 er Gutfleisch (Wiley\, 2012).
LOCATION:PLT
CATEGORIES:Departmental Colloquium
LAST-MODIFIED:20120510T102032Z
ORGANIZER;CN=Rachel Harrington:
END:VEVENT
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