Managing hysteresis of Gd5Si2Ge2 by magnetic field cycling

Abstract

Paper published as part of the special topic on Multicalorics Note: This paper is part of the Special Topic on Multicalorics. ARTICLES YOU MAY BE INTERESTED IN Room temperature exchange bias in antiferromagnetic composite BiFeO 3-TbMnO 3

First-order magnetic phase transition in Pr2In with negligible thermomagnetic hysteresis

“…Exhibited by a broad variety of materials and systems that range from ionic solids to metals, semimetals, and semiconductors, FOMPTs are a vibrant area of research because their occurrence may lead to useful functionalities, such as giant magnetocaloric effect, giant magnetostriction, and colossal magnetoresistance [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. These phenomena often arise when magnetic (dis)order-order transitions occur in parallel with changes in the underlying crystal lattice, leading to magnetostructural transformations (MSTs), which are commonly associated with thermomagnetic hysteresis [1][2][3][4][5][6][7][8][9][10][11][12][13]. Cycling a material across a hysteretic MST results in energy losses [1] which are detrimental to energy conversion applications, solid-state caloric cooling being one example.…”

“…Recent studies reveal that the hysteresis can be manipulated and reduced, enhancing the functionality of materials exhibiting MSTs, for example, improving reversibility of the giant magnetocaloric effect [12][13][14][15][16][17][18]. So far, materials where hysteresis could be successfully minimized are nearly exclusively transition-metal-based [5,[18][19][20][21].…”

Controlling magnetostructural transition and magnetocaloric effect in multi-component transition-metal-based materials

“…[10][11][12][13] Later, following the discovery of the giant MCE and the underlying FOMPT in Gd 5 Si 2 Ge 2 14,15 and related Gd 5 (Si 1−x Ge x ) 4 , 16 there has been a rapid expansion of research to identify new families of compounds, in which the magnetic and structural transitions can be coupled by chemical substitutions with the goal to develop materials performing most favorably for applications near ambient conditions. 4,5,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] The FOMPTs associated with the coupling of magnetic and structural transitions are often termed as magneto-structural transitions (MSTs).…”

Extraordinarily strong magneto-responsiveness in phase-separated LaFe2Si

“…Giant magnetocaloric effects arise from first-order magnetic phase transformations (FOMPTs), hence significant hysteresis and poor thermal transport remain two materials-related basic science challenges that impede the transitioning of the magnetocaloric cooling technologies to market [ 10 , 11 ]. Preserving giant magnetocaloric effects while reducing hysteresis to eliminate irreversibility has emerged as a major research area in rare-earth (R) metal-based LaT 13-x Si x H y , where T = Fe mixed with late 3 dmetals and R 5 X 4 , where X = group 14 element, and in transition metal-based Ni 2 TX and MnTX, where T = {Mn, Fe, Co, Ni, Cu} and X = {Al, Si, Ge, Sn, Ti} [12][13][14][15][16][17][18] . Considering the natural abundance of the constituting elements, LaFe 13-x Si x -derived compounds are among the most promising materials for energy applications [ 9 , 19-22 ].…”