Solid-State Heating Using the Multicaloric Effect in Multiferroics

The multicaloric effect is defined as the adiabatic reversible temperature change in multiferroic materials induced by the application of an external electric or magnetic field, and it was first theoretically proposed in 2012. The multicaloric effects in multiferroics, as well as other similar caloric effects in single ferroics, such as magnetocaloric, elastocaloric, barocaloric, and electrocaloric, have been the focus of much research due to their potential commercialization in solid-state refrigeration. In this short communication article, we examine the thermodynamics of the multicaloric effect for solid-state heating applications. A possible thermodynamic multicaloric heating cycle is proposed and then implemented to estimate the solid-state heating effect for a known electrocaloric system. This work offers a path to implementing caloric and multicaloric effects to efficient heating systems, and we offer a theoretical estimate of the upper limit of the temperature change achievable in a multicaloric cooling or heating effect.

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ABLATION OF SOLID HYDROGEN IN CONTACT WITH MAGNETIZED PLASMAS : CAN THE EXTERNAL MAGNETIC FIELD BE THE UPPER LIMIT OF THE SELF CONSISTENT ELECTRIC FIELD AT THE SOLID SURFACE ?

Le Journal de Physique Colloques ◽

10.1051/jphyscol:19797217 ◽

1979 ◽

Vol 40 (C7) ◽

pp. C7-447-C7-448

Author(s):

S. Mercurio

Keyword(s):

Magnetic Field ◽

External Magnetic Field ◽

Electric Field ◽

Solid Surface ◽

Solid Hydrogen ◽

The Self ◽

Magnetized Plasmas ◽

Upper Limit ◽

Self Consistent

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Triboelectric Nanogenerator using Multiferroic Materials: An Approach for Energy Harvesting and Self-Powered Magnetic Field Detection

Nano Energy ◽

10.1016/j.nanoen.2021.105964 ◽

2021 ◽

pp. 105964

Author(s):

Sugato Hajra ◽

Venkateswaran Vivekananthan ◽

Manisha Sahu ◽

Gaurav Khandelwal ◽

Nirmal Prashanth Maria Joseph Raj ◽

...

Keyword(s):

Magnetic Field ◽

Energy Harvesting ◽

Triboelectric Nanogenerator ◽

Multiferroic Materials ◽

Field Detection ◽

Self Powered

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Coupled effects of magnetic field, number of walls, geometric imperfection, temperature change, and boundary conditions on nonlocal nonlinear vibration of carbon nanotubes resting on elastic foundations

Forces in Mechanics ◽

10.1016/j.finmec.2021.100010 ◽

2021 ◽

Vol 3 ◽

pp. 100010

Author(s):

M.G. Sobamowo ◽

J.O. Akanmu ◽

O.A. Adeleye ◽

S.A. Akingbade ◽

A.A. Yinusa

Keyword(s):

Magnetic Field ◽

Carbon Nanotubes ◽

Boundary Conditions ◽

Nonlinear Vibration ◽

Temperature Change ◽

Geometric Imperfection ◽

Elastic Foundations ◽

Nonlocal Nonlinear

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Synchronized periodic maser flares of multiple OH and CH3OH lines in G323.459–0.079

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/stab462 ◽

2021 ◽

Vol 502 (4) ◽

pp. 5658-5667

Author(s):

G C MacLeod ◽

Derck P Smits ◽

J A Green ◽

S P van den Heever

Keyword(s):

Magnetic Field ◽

Excited State ◽

Central Region ◽

Time Lags ◽

Field Reversal ◽

Methanol Maser ◽

Physical Conditions ◽

Upper Limit ◽

Methanol Masers ◽

Magnetic Field Reversal

ABSTRACT The first confirmed periodically varying 6.031 and 6.035 GHz hydroxyl masers are reported here. They vary contemporaneously with the 6.7 GHz methanol masers in G323.459–0.079. The 1.665 GHz hydroxyl and 12.2 GHz methanol masers associated with G323.459–0.079 are also periodic. Evidence for periodicity is seen in all features in all transitions save a single 1.665 GHz hydroxyl maser feature. Historical excited-state hydroxyl maser observations set a stricter upper limit on the epoch in which a significant accretion event occurred. The associated burst in 6.7 GHz methanol maser activity has subsided significantly while the hydroxyl transitions are brightening possibly the result of changing physical conditions in the masing cloudlets. Time lags in methanol are confirmed and may be the result of the periodic flaring propagating outward from the central region of maser activity. A possible magnetic field reversal occurred during the accretion event.

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The behaviour of magnetic spherical particles and the heating effect in a rotating magnetic field via Brownian dynamics simulations

Molecular Physics ◽

10.1080/00268976.2021.1892225 ◽

2021 ◽

pp. e1892225

Author(s):

Seiya Suzuki ◽

Akira Satoh ◽

Muneo Futamura

Keyword(s):

Magnetic Field ◽

Brownian Dynamics ◽

Rotating Magnetic Field ◽

Spherical Particles ◽

Heating Effect ◽

Dynamics Simulations ◽

Brownian Dynamics Simulations

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Solid-state 13C NMR spectroscopic studies of soil organic matter at two magnetic field strengths

Geoderma ◽

10.1016/j.geoderma.2004.08.003 ◽

2005 ◽

Vol 125 (3-4) ◽

pp. 249-271 ◽

Cited By ~ 23

Author(s):

Ronald J. Smernik

Keyword(s):

Magnetic Field ◽

Organic Matter ◽

Solid State ◽

Soil Organic Matter ◽

13C Nmr ◽

Spectroscopic Studies ◽

Solid State 13C Nmr ◽

Field Strengths

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Effect of a permanent magnetic field on quasi-periodic and chaotic oscillation regimes in solid-state ring lasers

Quantum Electronics ◽

10.1070/qe2005v035n01abeh002869 ◽

2005 ◽

Vol 35 (1) ◽

pp. 7-12

Author(s):

D A Aleshin ◽

Nikolai V Kravtsov ◽

E G Lariontsev ◽

S N Chekina

Keyword(s):

Magnetic Field ◽

Solid State ◽

Chaotic Oscillation ◽

Permanent Magnetic Field ◽

Ring Lasers

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Design and Fabrication of a Magnetocaloric Microcooler

Microelectromechanical Systems ◽

10.1115/imece2005-82720 ◽

2005 ◽

Cited By ~ 1

Author(s):

Sangchae Kim ◽

Bharath Bethala ◽

Simone Ghirlanda ◽

Senthil N. Sambandam ◽

Shekhar Bhansali

Keyword(s):

Magnetic Field ◽

Ambient Temperature ◽

Temperature Change ◽

Entropy Change ◽

Temperature Sensors ◽

Experimental Results ◽

Maximum Temperature ◽

Alternative Technology ◽

Temperature Conditions ◽

Si Wafer

Magnetocaloric refrigeration is increasingly being explored as an alternative technology for cooling. This paper presents the design and fabrication of a micromachined magnetocaloric cooler. The cooler consists of fluidic microchannels (in a Si wafer), diffused temperature sensors, and a Gd5(Si2Ge2) magnetocaloric refrigeration element. A magnetic field of 1.5 T is applied using an electromagnet to change the entropy of the magnetocaloric element for different ambient temperature conditions ranging from 258 K to 280 K, and the results are discussed. The tests show a maximum temperature change of 7 K on the magnetocaloric element at 258 K. The experimental results co-relate well with the entropy change of the material.

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