Magnetocaloric and barocaloric effects in a Gd
 5
 Si
 2
 Ge
 2
 compound

Zou, Jiezhong

doi:10.1088/1674-1056/21/3/037503

Cited by 19 publications

(8 citation statements)

References 40 publications

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“…According to Rogers [83] the differences in the work function produced a thermally rectifying effect. The work function is the energy required to remove an electron from the highest filled level of a solid.…”

Section: Thermal Potential Barrier At Interfacesmentioning

confidence: 99%

“…Most applications relate to carbon, boron nitride nanotubes, asymmetric graphene sheets, carbon nanocones or nanohorns [72][73][74][83][84][85][86].…”

Section: • Asymmetric Nanostructured Geometrymentioning

confidence: 99%

“…To where p is the pressure. Furthermore, the partial derivate of the entropy with respect to the pressure can be expressed using the Maxwell relation os=op ð Þ T ¼ À oV=oT ð Þ p and the isothermal entropy change can be expressed as [83]:…”

Section: Chapter 8 Design Issues and Future Perspectives For Magnetocmentioning

confidence: 99%

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Magnetocaloric Energy Conversion

Kitanovski

Tušek

Tomc

et al. 2015

Green Energy and Technology

245

152

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Section: Thermal Potential Barrier At Interfacesmentioning

confidence: 99%

“…Most applications relate to carbon, boron nitride nanotubes, asymmetric graphene sheets, carbon nanocones or nanohorns [72][73][74][83][84][85][86].…”

Section: • Asymmetric Nanostructured Geometrymentioning

confidence: 99%

See 1 more Smart Citation

Magnetocaloric Energy Conversion

Kitanovski

Tušek

Tomc

et al. 2015

Green Energy and Technology

245

152

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“…Magnetocaloric effect of La 0.6 Pr 0.4 Fe 11.4 Si 1.6 B 0.2 alloy and its hydride were investigated by Ge et al [5]. Magnetocaloric and barocaloric effects in a Gd 5 Si 2 Ge 2 compound were studied [6].…”

Section: Introductionmentioning

confidence: 99%

Height-related magnetoelectric performance of PZT/Ni layered composites

et al. 2014

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The effect of height on performance of the PZT/Ni cylindrical bilayered magnetoelectric (ME) composites was studied in situ in this paper. Multiple resonant peaks appear between 1 and 300 kHz frequency for cylinders of different heights. The first resonance frequency does not change with the cylinder height decreasing, but the second and the third resonant frequencies increase. The first three resonant modes are attributed to the cylinder radial, first-order height resonance, and second-order height resonance, respectively. The appropriate size and resonance frequency were chosen to obtain the highest ME voltage coefficient when designing cylindrical bilayered magnetoelectric devices. This article provides reference to design cylindrical magnetoelectric devices.

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“…Furthermore, the partial derivate of the entropy with respect to the pressure can be expressed using the Maxwell relation os=op ð Þ T ¼ À oV=oT ð Þ p and the isothermal entropy change can be expressed as [83]:…”

Section: Introduction To the Barocaloric Effect And Barocaloric Matermentioning

confidence: 99%

Alternative Caloric Energy Conversions

Kitanovski

Tušek

Tomc

et al. 2014

Green Energy and Technology

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In this chapter, some alternative, "ferroic", solid-state energy conversion technologies are presented. These are the electrocaloric (pyroelectric), the barocaloric and the elastocaloric energy conversions. In their nature, they are analogous to magnetocaloric energy conversion; however, different external influences are needed to initialize the caloric effect. In the case of electrocaloric energy conversion, this is related to a change in the electric field; in the case of barocalorics, to a change in the hydrostatic pressure and in the case of elastocaloric energy conversion, to a change in the mechanical stress. Each group, to some extent, possesses possible advantages as well as some disadvantages in comparison with magnetocaloric energy conversion. However, since all three alternative solid-state energy conversion technologies are at an early stage of development, it is not yet reasonable to compare them with magnetocaloric energy conversion. It is only time and further research that will show the full potential of these alternative solid-state energy conversion technologies.This chapter is divided into three sections. In each section, the physical principle behind the discussed ferroic effect will be presented and an overview of existing materials with their physical properties will be made. Furthermore, different possibilities for designing an energy conversion device using these materials will be reviewed (especially for electrocalorics). However, since the technology based on these three effects is at an early stage of development, only a few prototypes of energy conversion devices have been presented. Electrocaloric and Pyroelectric Energy ConversionIn this subsection, the electrocaloric and pyroelectric energy conversions are presented and discussed. In general, the electrocaloric energy conversion stands for the heat pumping processes (or refrigeration), whereas the pyroelectric energy conversion stands for the power generation.The underlying mechanism of the electrocaloric energy conversion is the so-called electrocaloric effect. The electrocaloric effect is expressed as the temperature change of dielectric materials subjected to a varying electric field. To simplify, as the electrocaloric material is subjected to a positive electric field change the material heats up, yet as the electric field is turned off the opposite occurs and the material cools down. Speaking thermodynamically, the electrocaloric effect is analogue to the magnetocaloric effect, though instead of the magnetic field change an electric field change is required to induce the caloric effect in the material. However, the electrocaloric energy conversion has some potential advantages over the magnetocaloric energy conversion, such as higher power density and higher compactness of the energy conversion devices, no dependence on rare-earth materials, no moving parts of the device, operation of the devices with less vibrations, silent operation, etc. Nevertheless, the area of the electrocaloric energy conversion only recently attracted m...

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Magnetocaloric and barocaloric effects in a Gd ₅ Si ₂ Ge ₂ compound

Cited by 19 publications

References 40 publications

Magnetocaloric Energy Conversion

Magnetocaloric Energy Conversion

Height-related magnetoelectric performance of PZT/Ni layered composites

Alternative Caloric Energy Conversions

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