2015
DOI: 10.1038/srep11288
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Tuneable Magnetic Phase Transitions in Layered CeMn2Ge2-xSix Compounds

Abstract: The structural and magnetic properties of seven CeMn2Ge2-xSix compounds with x = 0.0–2.0 have been investigated in detail. Substitution of Ge with Si leads to a monotonic decrease of both a and c along with concomitant contraction of the unit cell volume and significant modifications of the magnetic states - a crossover from ferromagnetism at room temperature for Ge-rich compounds to antiferromagnetism for Si-rich compounds. The magnetic phase diagram has been constructed over the full range of CeMn2Ge2-xSix c… Show more

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Cited by 41 publications
(22 citation statements)
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“…The entropy change values for our single crystalline samples are in close agreement with previously reported polycrystalline sample measured values as well [1,6]. Although, AlFe 2 B 2 is a rare-earth free material, its magnetocaloric property is larger than lighter rare-earth RT 2 X 2 (R = rare earth T = transition metal, X = Si,Ge) compounds with ThCr 2 Si 2 -type structure (space group I4/mmm) namely CeMn 2 Ge 2 (∼ 1.8 Jkg −1 K −1 ) [22],…”
Section: Structural Characterizationsupporting
confidence: 74%
“…The entropy change values for our single crystalline samples are in close agreement with previously reported polycrystalline sample measured values as well [1,6]. Although, AlFe 2 B 2 is a rare-earth free material, its magnetocaloric property is larger than lighter rare-earth RT 2 X 2 (R = rare earth T = transition metal, X = Si,Ge) compounds with ThCr 2 Si 2 -type structure (space group I4/mmm) namely CeMn 2 Ge 2 (∼ 1.8 Jkg −1 K −1 ) [22],…”
Section: Structural Characterizationsupporting
confidence: 74%
“…Due to the structural behavior and strong magnetic coupling, it is clear that the magnetostructural transition (MST) of the first order produces a large MCE. A lot of the ongoing studies on magnetic refrigeration are mainly focused on perovskite manganites [2], Gd 5 (Si x Ge 1−x ) 4 [3], MnFeP 1−x As x [4], La(Fe 1−x Si x ) 13 [5], NiMn-based Heusler alloys [1], and MM'X alloys (M and M' denote 3D transition elements and X denotes main group elements) [6][7][8]. The intermetallic MnCoGe-based compound is a typical member of the MM'X family that maintains sufficient physical contents and application prospects that are promising.…”
Section: Introductionmentioning
confidence: 99%
“…В соединениях RMn 2 X 2 с d Mn-Mn < d c магнитные моменты Mn между соседними слоями обычно упорядочены антиферромагнитно, а в соединениях RMn 2 X 2 с d Mn-Mn > d c -ферромагнит-но [1,6]. Кроме основного критического расстояния d c принято выделять еще одно критическое расстояние между атомами марганца d c2 ≈ 0.284 nm [7][8][9]. Счита-ется, что в соединениях RMn 2 X 2 с d c2 < d Mn-Mn < d c реализуется угловая магнитная структура внутри слоев Mn и антиферромагнитное межслоевое упорядочение.…”
Section: Introductionunclassified