Concept

Réfrigération magnétique

Publications associées (63)

The thermodynamics of devices with solid layered-bed magnetocaloric refrigerants

Didier Albert Simon Vuarnoz, Gilles Courret

In conventional refrigeration the use of the T S diagram to determine thermodynamic cycle performance is a well accepted tool. This method is based on a single state description of the gaseous refrigerant during its cycling. Devices filled with a magnetoca ...

Elsevier2012

Numerical analysis of a reciprocating active magnetic regenerator made of gadolinium wires

Didier Albert Simon Vuarnoz

During the last century, the MagnetoCaloric Effect (MCE) has been widely used for realizing extremely low temperatures. However, it is only in the last three decades that some of the efforts to develop a benign and cutting-edge technology for realizing the ...

2012

Infrared phonon anomaly and magnetic excitations in single-crystal Cu3Bi(SeO3)(2)O2Cl

Helmuth Berger

Infrared reflection and transmission as a function of temperature have been measured on single crystals of Cu3Bi(SeO3)(2)O2Cl. The complex dielectric function and optical properties along all three principal axes of the orthorhombic cell were obtained via ...

Amer Physical Soc2012

Quantitative feasibility study of magnetocaloric energy conversion utilizing industrial waste heat

Didier Albert Simon Vuarnoz, Cyrill Gonin

The main objective of this theoretical study was to investigate under which conditions a magnetic energy conversion device (MECD) - utilizing industrial waste heat - is economically feasible. Furthermore, it was evaluated if magnetic energy conversion (MCE ...

2012

Incommensurate magnetic order in TbTe 3

Joël Mesot

We report a neutron diffraction study of the magnetic phase transitions in the charge-density wave (CDW) TbTe 3 compound. We discover that in the paramagnetic phase there are strong 2D-like magnetic correlations, consistent with the pronounced anisotropy o ...

Institute of Physics2012

Dynamical photothermal response of optical whispering-gallery silica microresonators in helium-4 cryogenic environments

Tobias Kippenberg, Xiaoqing Zhou, Albert Schliesser

We present optical measurements of the photothermal response of a whispering-gallery silica microresonator in a helium-4 exchange gas cryostat. Using transient-mode numerical simulations, we discuss the various heat propagation mechanisms. (C) 2011 Optical ...

Ieee2012

Non-volatile ferroelectric gating of magnetotransport anisotropy in (Ga,Mn)(As,P)

Nava Setter, Igor Stolichnov, Zhouji Huang, Evgeny Mikheev

We demonstrate charge-mediated and non-volatile control of anisotropic magnetoresistance (AMR) in a dilute magnetic semiconductor (Ga,Mn)(As, P) with an integrated polymer ferroelectric gate. The persistent electric field associated with switchable polariz ...

American Institute of Physics2012

Analysis Of An Active Magnetic Regenerator Made Of Gadolinium Wires

Didier Albert Simon Vuarnoz

INT INST REFRIGERATION2011

Modeling and Simulation of the Operation of a Rotary Magnetic Refrigerator

Didier Albert Simon Vuarnoz, Cyrill Gonin

Magnetic refrigeration is a new environmentally benign technology and a promising alternative to conventional vapor-cycle refrigeration. Among these technologies the household refrigerator without a freezing compartment shows very good prospects for a succ ...

2011

Low-temperature magnetic and thermal properties of the frustrated two-dimensional S=1 compound Ni-5(TeO3)(4)Cl-2

Helmuth Berger

The temperature and magnetic field dependent magnetization of the two-dimensional quantum spin system Ni-5(TeO3)(4)Cl-2 has been investigated using single crystals in temperature range 1.8-100 K and in magnetic fields up to 14 T. The magnetization below th ...

2011

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