Magnetic states in the Ce2Fe17−xMnxHy hydrides

Iwasieczko, W.; Кучин, А. Г.; Drulis, H.

doi:10.1016/j.jallcom.2004.09.007

Cited by 11 publications

(11 citation statements)

References 28 publications

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“…The magnetic state of the Ce 2 Fe 17−x Mn x H y compounds with x = 1 and y = 1 was either reported to stay unchanged 21 or to become of noncollinear ferromagnetic type for Ce 2 Fe 17−x Mn x H y compounds with x = 0.75, 1 and y =1. 22 The suppression of the AFM and the stabilization of the FM with hydrogenation were explained as being caused by the increase of the exchange integrals due to the volume expansion. 21 Similar conclusions were made for binary Ce 2 Fe 17 H y compounds, where magnetic properties were reported to be induced mainly by the increase of Fe-Fe interatomic distances.…”

Section: Introductionmentioning

confidence: 99%

Influence of lattice volume on magnetic states of Ce2Fe16MnDy compounds (y=,1,2.3)

Prokhnenko

Arnold

Кучин

et al. 2006

Journal of Applied Physics

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The substitution of Mn for Fe in Ce2Fe17 suppresses its ferromagnetic ground state completely for Mn contents x⩾0.5Mn∕f.u. Ce2Fe16Mn has only an antiferromagnetic phase (incommensurate helix along c axis) below TN=198K. In this paper, we present and discuss the effects of deuterium insertion (that can be considered as an application of negative chemical pressure) on the magnetostructural properties of Ce2Fe16Mn. Application of (positive) high pressures up to 10kbar on Ce2Fe16MnDy deuterides (y=1,2.3) allowed us to estimate the role of lattice volume and to divide it from the role of modified electronic band structure that both determines the magnetic states of the deuterated compounds. The results show that a ferromagnetic phase is stabilized by the insertion of D into the antiferromagnetic Ce2Fe16Mn. The Curie temperature TC of Ce2Fe16MnDy deuterides increases with increasing D content reaching TC=258K for y=2.3 and remarkably decreases with pressure dTC∕dP=−5.4K∕kbar and dTC∕dP=−3.6K∕kbar for Ce2Fe16MnD1 and Ce2Fe16MnD2.3, respectively. Significant difference between the magnetization of Ce2Fe16MnD1 under pressure and the one of the parent compound at ambient pressure indicates that changes of the volume alone cannot determine the magnetic states upon the initial deuteration. However, the volume expansion becomes dominant when increasing the deuterium content up to 2.3D∕f.u.

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Section: Introductionmentioning

confidence: 99%

Influence of lattice volume on magnetic states of Ce2Fe16MnDy compounds (y=,1,2.3)

Prokhnenko

Arnold

Кучин

et al. 2006

Journal of Applied Physics

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“…The temperatures of magnetic phase transitions and the magnetic structures are extremely sensitive to the interstitial impurity atoms (hydrogen, in particular) [22,23], to substitutional atoms [24] and high pressure [25]. The magnetic phase diagrams of such compositions have been obtained and studied extensively in literature [26].…”

Section: Resultsmentioning

confidence: 99%

Magnetic phase diagrams of Gd-H, Tb-H, Dy-H systems

et al. 2018

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“…On the contrary, in the Ce 2 Fe 17−x Mn x compounds with x = 0-0.35 the magnetic phase transition at T = T between ground collinear ferromagnetic state and helical antiferromagnetic one is rather abrupt [26,28] and characterized by higher ␦M/␦T values in comparison with those with x = 1.3-2 [24,25]. Therefore, two peak values of − S M (T) at T and T N are similar in high fields for the compounds with x = 0-0.35 (Figs.…”

Section: Discussionmentioning

confidence: 99%

“…[24,25]; so only the phase transition the "induced ferromagnet-paramagnet" type remains. This is why the highertemperature transition in these compounds displays a much larger magnetic entropy change than that accompanying the lowertemperature transition starting with about 1.5 T field (Fig.…”

Section: Discussionmentioning

confidence: 99%