2024 Giant magnetocaloric effect in gd5 si2ge2

Giant magnetocaloric effect in gd5 si2ge2

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August undefined, 2024

WebSep 3, 2002 · A temperature-dependent, single crystal x-ray diffraction study of the giant magnetocaloric material, Gd5(Si2Ge2), across its Curie temperature (276 K) reveals that the simultaneous orthorhombic ... WebJan 1, 2024 · With the invention of giant magnetocaloric effect in Gd 5 (Si x Ge 1 − x) 4, there has been extensive research on magnetocaloric materials and magnetic refrigeration. Magnetic refrigerators built with the new giant magnetocaloric materials, such as LaFeSi, Gd 5 (Si x Ge 1 − x ) 4 , and NiMnFe and will have efficiency even higher than the 60 ...

Efficient Room-Temperature Cooling with Magnets

WebJun 25, 2024 · Giant magnetocaloric effect in Gd5(Si2Ge2) Phys. Rev. Lett. (1997) O. Tegus et al. Transition-metal-based magnetic refrigerants for room-temperature applications. Nature (2002) F.-x Hu et al. Influence of negative lattice expansion and metamagnetic transition on magnetic entropy change in the compound LaFe11.4Si1.6. WebMay 23, 2024 · In 1997, the Ames Research Center reported the discovery of four giant magnetocaloric effects in the Gd5 (Si2Ge1-X) compounds. The magnetic ordering temperature of these materials can vary over a … phytoanimation

Giant Magnetocaloric Effect in Gd 5 \(Si 2 Ge 2 \) - NASA/ADS

WebDec 1, 2012 · Giant magnetocaloric effect in Gd5(Si2Ge2) Phys. Rev. Lett., 78 (1997), pp. 4494-4497. Google Scholar [6] ... Anisotropic magnetic properties and giant magnetocaloric effect in antiferromagnetic RMnO3 crystals (R=Dy, Tb, Ho, and Yb) Phys. Rev. B, 84 (2011), p. 235127. CrossRef View in Scopus Google Scholar WebNov 15, 2002 · Conference: Magnetic Field Induced Phase Transitions in Gd5(Si1.95Ge2.05) Single Crystal and the Anisotropic Magnetocaloric Effect WebSep 15, 2024 · There are several known classes of inexpensive materials with a giant magnetocaloric effect, and the search continues. ... Effect of alloying on the giant magnetocaloric effect of Gd5(Si2Ge2) journal, March 1997. ... Direct observation of the magnetic-field-induced entropy change in Gd5(SixGe1−x)4 giant magnetocaloric alloys … tooth tumor symptoms

Effect of alloying on the giant magnetocaloric effect of …

Giant Magnetocaloric Effect in Gd5(Si2Ge2) - 百度学术

WebGd5(Ge1-xSi x), x < 4 based alloys are potential candidates for magnetic refrigeration in the range ~20 - ~290 K. However, one of the greatest obstacles for the use of that technology in large scale is the utilization of high pure Gd metal (99.99 wt. (%)) to produce the GdGeSi alloys, since the impurity elements decrease the intensity of the magnetocaloric effect … WebMar 28, 2003 · CHORUS ABSTRACT The appropriate heat treatment of the Gd 5 Si 2 Ge 2 alloy prepared from high-purity Gd results in a considerable enhancement of its … phyto andro menWebFeb 28, 2024 · Since the discovery of the giant magnetocaloric effect of Gd 5 (Si 2 Ge 2) in 2000, a new series of magnetocaloric materials has been developed. Phospho-arsenide MnFeP 1−x As x is a material derived from iron-Fe 2 P phosphide where the variation of the phosphorus and arsenic fraction between 0.25 and 0.65 gives a Curie temperature … phytoanticipines

"WebA giant magnetocaloric effect (ΔT / ΔB ≅ 8 K / 2 T) makes Gd5(Si2Ge2) promising for energy efficient refrigeration and a colossal strain (up to 10,000 ppm) gives it a potential … " - Giant magnetocaloric effect in gd5 si2ge2

Giant magnetocaloric effect in gd5 si2ge2

Giant magnetocaloric effect driven by structural transitions

WebDec 21, 2024 · In particular, the Gd 5 (Si x Ge 1–x) 4 compounds are a family of well-known alloys that present both giant magnetocaloric and colossal magnetostriction effects. Despite their remarkable properties, very few more » reports have been dedicated to the nanostructuring of these materials: here, we report a ~800 nm Gd 5 Si 2.7 Ge 1.3 thin film. WebMay 27, 2012 · The discovery of room-temperature giant magnetocaloric compounds, such as Gd 5 Si 4−x Ge x (refs 3, 4 ), LaFe 13−x Si x H (refs 5, 6, 7) and MnFeP (As, Ge) (refs 8, 9 ), has driven development...

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WebAn extremely large magnetic entropy change has been discovered in Gd 5 \(Si 2 Ge 2 \) when subjected to a change in the magnetic field. It exceeds the reversible (with respect to an alternating magnetic field) magnetocaloric effect in any known magnetic material by at least a factor of 2, and it is due to a first order [ferromagnetic\(I\)<- … WebDec 1, 2004 · The discovery of a noticeably large MCE (change in entropy from 36 J kg −1 K −1 to 272 K for a change in magnetic field from 0 to 5 …

WebMar 2, 1997 · A study of the effect of different alloying additions substituting for nonmagnetic Si and Ge on the giant magnetocaloric effect observed for the compound … WebFeb 5, 2008 · 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 …

WebAug 28, 2024 · A study of the effect of different alloying additions substituting for nonmagnetic Si and Ge on the giant magnetocaloric effect observed for the compound Gd5(Si2Ge2) revealed that small amounts ... WebMar 2, 1997 · A study of the effect of different alloying additions substituting for nonmagnetic Si and Ge on the giant magnetocaloric effect observed for the compound Gd 5 (Si 2 Ge 2) revealed that small amounts (∼ 0.33 at%) of Ga raise the Curie temperature and preserve the giant magnetocaloric effect.Larger quantities of Ga lead …

WebRecently a giant MCE (GMCE) was discovered in Gd 5 (Si x Ge 1-x) alloys, where x < 4. This property makes these alloys potential candidates for magnetic refrigeration in the …

WebThe giant magnetocaloric effect Gd 5 Si 2 Ge 2 alloy was prepared with 99wt% low purity commercial Gd. Powder XRD and magnetic measurements showed that the Gd 5 Si 2 … tooth t shirtWebThe magnetocaloric effect (MCE, from magnet and calorie) is a magneto- thermodynamic phenomenon in which a temperature change of a suitable material is caused by exposing … tooth tubercleWebJun 24, 2004 · In 1997, a ‘giant’ magnetocaloric effect, between 270 K and 300 K, was reported in Gd 5 Ge 2 Si 2, demonstrating its potential as a near-room-temperature magnetic refrigerant 6,7,8. phyto animal health phytoanticipins翻译WebMar 15, 2024 · It has been found that the maximum magnetocaloric effect has been observed for the Ni 50 Mn 36 Sb 12 Ge 2 composition and is equal to ... Avoid the common mistakes References. V. K. Pecharsky and K. A. Gschneidner, Jr., “Giant magnetocaloric effect in Gd5(Si2Ge2),” Phys. Rev. Lett. 78, 4494–4497 (1997). phyto antibodyWebMar 2, 1997 · The giant magnetocaloric effect exists because the alloys Gd5 (Si~Gel_~)4, where x ~< 0.5, undergo two successive magnetic phase transitions with changing … tooth tunesWebJun 9, 1997 · It exceeds the reversible (with respect to an alternating magnetic field) magnetocaloric effect in any known magnetic material by at least a factor of 2, and it is … phyto application login