اثر کالریک برگشت پذیر در لایه نازک FeRh

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اثر کالریک برگشت پذیر در لایه نازک FeRh پنجاه و پنجمین جلسه خبرنشست دانشکده فیزیک اثر کالریک برگشت پذیر در لایه نازک FeRh علی قطبی ورزنه

Cooling Techniques Liquid nitrogen and liquid helium 2. Laser Cooling 3. Magnetic&Electric cooling

Caloric materials Magnetocaloric (magnetic field) Electrocaloric (electric field) Elastocaloric (uniaxial stress) Barocaloric (hydrostatic pressure) (Mechanocaloric)

MAGNETOCALORIC EFFECT History Magneto caloric effect was discovered in pure iron in 1881 by E. Warburg. The cooling technology was first demonstrated experimentally in 1933 by Chemist Nobel Laureate(1949) William F.Giauque & his colleague Dr.D.P. MacDougall. The magnetocaloric effect in Fe49Rh51 compound in 1990 by Nikitin. In 1997, Karl A. Gscheidner, demostrated the first near room temperature proof of concept magnetic refrigerator. (V. K. Pecharsky and K. A. Gschneider,PRL1997, Cited by ~3000) X. Moya, Natuer Materials 2014

APPLICATION تا 40% بازده ی بالاتر نسبت به یخچال های معمولی تا 40% بازده ی بالاتر نسبت به یخچال های معمولی کاهش گازهای گلخانه استفاده از سیالی مانند آب به جای CFCها صدای کمتر A. Tishin, International Journal of Refrigeration, 2016.

Magnetic Refrigeration Cycle J. Lyubina, et al., J. Phys. D: Appl. Phys. 2017

X. Moya, Natuer Materials 2014 Jiang. Liu, Natuer Materials 2012