Results 151 to 160 of about 1,572 (185)

Engineering molecular rings for magnetocaloric effect

Applied Physics Letters, 2004
By substituting one Cr3+(s=3/2) with Cd2+(s=0) in molecular octanuclear rings, a diluted ensemble of identical nanomagnets with a S=3/2 ground state, weakly split in zero field, is obtained. The lattice contribution and the essential parameters of the spin Hamiltonian of these uncompensated antiferromagnetic cyclic spin systems are determined by ...
M. AFFRONTE, A. GHIRRI, CARRETTA, Stefano, AMORETTI, Giuseppe, S. PILIGKOS, G. A. TIMCO, R. E. P. WINPENNY   +6 more
openaire   +3 more sources

Oscillating magnetocaloric effect

Applied Physics Letters, 2011
This Letter presents the oscillatory behavior found in the magnetic entropy change of diamagnetic materials. We show that this quantity depends on the oscillating term and, as a consequence, the magnetocaloric potential can be tuned as either inverse or normal, depending on the value of the magnetic field change.
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Electric Field Control of the Magnetocaloric Effect

Advanced Materials, 2014
Through strain-mediated magnetoelectric coupling, it is demonstrated that the magnetocaloric effect of a ferromagnetic shape-memory alloy can be controlled by an electric field. Large hysteresis and the limited operating temperature region are effectively overcome by applying an electric field on a laminate comprising a piezoelectric and the alloy ...
Yuan-Yuan, Gong, Dun-Hui, Wang, Qing-Qi, Cao, En-Ke, Liu, Jian, Liu, You-Wei, Du   +5 more
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Magnetocaloric Effect in Ferromagnetic and Superconducting Materials

physica status solidi (b), 1998
Computer studies are made illustrating the similarities of the interesting change of sign in the magnetocaloric effect between the vortex lattice in superconductors and a system of interacting magnons and phonons in ferromagnetic materials. This change happens in the superconducting system when the external magnetic field approaches a critical value ...
Svobodny, Thomas P., Kalva, Z.
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The magnetocaloric effect in dysprosium

Journal of Applied Physics, 1979
The magnetocaloric effect in polycrystalline Dy was measured between 84 and 280 K in measuring fields from 1 to 7 T. These adiabatic temperature changes reflect structural changes in Dy with applied field and temperature, and include the first magnetocaloric data for a helical antiferromagnet.
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Magnetocaloric effect in La1.25Sr0.75MnCoO6

Journal of Thermal Analysis and Calorimetry, 2013
The magnetocaloric properties of La1.25Sr0.75MnCoO6 (LSCM) manganites that were synthesized at 750 and 1,300 °C have been investigated. It is found that magnetic entropy change distribution of the LSCM is much more uniform than that of gadolinium. This feature is desirable for an Ericson-cycle magnetic refrigerator.
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Acousto-Thermal Detection of the Magnetocaloric Effect

1992
We present a new photoacoustic—like detection technique which allows for the rapid detection of small periodic temperature variations induced by small periodic adiabatic magnetic field variations. Results are presented for gadolinium near the Curie point.
W. Otowski, Glorieux, C., Hofman, R., Thoen, J.   +3 more
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Magnetocaloric effect in

Journal of Magnetism and Magnetic Materials, 2006
M.B. Gomes, N.A. de Oliveira
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Who discovered the magnetocaloric effect?

The European Physical Journal H, 2013
A magnetic body changes its thermal state when subjected to a changing magnetic field. In particular, if done under adiabatic conditions, its temperature changes. For the past 15 years the magnetocaloric effect has been the focus of significant research due to its possible application for efficient refrigeration near room temperature. At the same time,
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Magnetocaloric effect in

Journal of Magnetism and Magnetic Materials, 2008
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