Magnetic properties of the off-stoichiometric GdNi2Mnx alloys

Gerasimov, E. G.; Мушников, Н. В.; Терентьев, П. Б.; Гавико, В. С.; Inishev, A. A.

doi:10.1016/j.jallcom.2013.03.233

Cited by 22 publications

(6 citation statements)

References 17 publications

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“…Recently, it was reported that RCo 2 Mn with R = Ho and Er also crystallize in the cubic MgCu 2 -type structure [2]. It was found that the introduction of Mn into RT 2 (T is 3d or 4d transition metal) compounds led to a significant modification of magnetic properties such as the Curie temperature [2,4,[7][8][9][10][11], magnetic entropy change [4], saturation moment [2], the nature of the magnetic transition [4], and so on. It is accepted that the Curie temperature can be raised significantly with Mn doping due to the enhanced 3d transition-metal ion interactions [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…It is accepted that the Curie temperature can be raised significantly with Mn doping due to the enhanced 3d transition-metal ion interactions [5,6]. It is of interest that the RT 2 Mn compounds were isostructural to RT 2 with the * jianli@uow.edu.au † cheng@uow.edu.au MgCu 2 -type structure, although the ratio of the R to T is 1:3 [2,4,[7][8][9][10][11], and the Mn was observed to occupy both the R and T sites. All the above modified magnetic properties and crystal structure inspired more work on related series materials such as ErCo 2 Mn [2], HoNi 2 Mn [9], DyNi 2 Mn [5,6], and TbNi 2 Mn [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…For example, GdNi 2 Mn x (0 x 0.6) alloys were successfully synthesized and characterized by XRD. When the Mn concentration increases to a certain level (x 0.35), a second phase with rhombohedral PuNi 3 -type (R3m) structure starts to form [10]. Recently, the investigation on ErCo 2 Mn x (x = 0 to 0.8) also found that, when x 0.8, the alloys are almost single phase (MgCu 2 -type Laves-phase structure), while a second phase with cubic Th 6 Mn 23 -type structure appears for larger x values [11].…”

Section: Introductionmentioning

confidence: 99%

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Tuning the magnetic and structural transitions in TbCo2Mnx compounds

et al. 2017

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The wide ranging magnetic behavior in intermetallic compounds continues to attract broad interest. Effective control of their magnetic properties is of great importance for fundamental research and potential applications. In this work the structural and magnetic properties of TbCo2Mnx compounds are studied by a combination of temperature dependent synchrotron x-ray diffraction, neutron powder diffraction, specific heat, and magnetic measurements. Magnetization measurements show that the addition of Mn can modify the magnetic behavior significantly: first, the magnetic transition temperatures increase from ∼227 K to 332 K with x = 0.0 to 0.3; secondly, the nature of the magnetic transitions change from the first order to second order, as identified by three methods (Banerjee criterion, master curves of magnetic entropy changes, and detailed crystal structure analysis through neutron diffraction). Both synchrotron x-ray diffraction and neutron diffraction confirm that a structural transition, from cubic Fd3¯m to rhombohedral R3¯m on cooling, occurred accompanying the magnetic transition. To further clarify the nature of the second order magnetic phase transitions, we have carried out a detailed critical exponent analysis. The derived critical exponents are close to the theoretical prediction from the mean-field model, indicating the magnetic interactions are long range. This work benefits our general understanding of magnetic interactions in intermetallic compounds and provides guidance to design a functional magnetic material for room temperature magnetic devices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tuning the magnetic and structural transitions in TbCo2Mnx compounds

et al. 2017

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“…The alloys with light R were not synthesized because of the highly different atomic radii of R and Mn, resulting in phase competition. A change in crystal structure was reported for high concentrations of Mn, e.g., to rhombohedral PuNi 3 -type structure (R-3m) for RNi 2 Mn x alloys with R = Gd (x > 0.4), Tb (x > 1.25), Dy (x > 1.5), and Er (x > 2) [15][16][17][18]. The manganese content considerably affects the magnetic properties of the alloy; noticeably, the magnetic ordering temperature is multiple times higher than the RNi 2 analogues [14,18].…”

Section: Gdpd2mnmentioning

confidence: 96%

Crystal structure, magnetic and thermal properties of the non-stoichiometric alloys Tb0.95Pd2.20Mn0.85 and Dy1.00Pd2.15Mn0.85

Kovalyuk¹,

Colman²,

Vondráčková³

et al. 2023

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The alloys RNi2Mn and RCo2Mn with R representing the rare earth element are isostructural analogues of the binary Laves phases RNi2, RCo2. We have synthesized the isoelectronic Pd-based RPd2Mn analogues with R = Gd, Tb, and Dy, for the first time. They crystallize in a cubic structure, however, not in the cubic C15 (Fd-3m) structure of RNi2Mn, nor the Laves phase' structure. Instead, the crystal lattice is described by the Im-3m space group with Tb/Dy, Pd, and Mn atoms randomly distributed over the 2a Wyckoff position of the W-type structure (A2, disordered bcc). The magnetization data reveal a standard paramagnetic behavior, with effective magnetic moments strikingly close to those expected for Tb 3+ and Dy 3+ free ions, down to 130 K.

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“…The Curie temperatures T C are considerably higher for the RNi 2 Mn alloys in comparison with T C for corresponding binary RNi 2 and RMn 2 . Later, the structure and magnetic properties of the non-stoichiometric RM 2 Mn x (0 ≤ x ≤ 1.5) compounds with R = Tb, Dy, Gd were studied [4][5][6][7]. It was shown that the MgCu 2 -type structure exists up to the manganese content x = 0.8 for ErCo 2 Mn x and up to x = 1.5 for ErNi 2 Mn x .…”

Section: Introductionmentioning

confidence: 99%

Magnetic properties of the non-stoichiometric TbCo₂Ni_x alloys

et al. 2018

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The magnetic and magnetothermal properties of the non-stoichiometric TbCo2Nix (0 ≤ x ≤ 0.2) alloys were studied. It was found that the concentration dependence of the Curie temperature and magnetic moment of the 3d-sublattice have a maximum at x = 0.025. The obtained experimental magnetic properties of the TbCo2Nix alloys were discussed under assumption that the Co magnetic moment in the compounds changes with increasing x. The magnetic entropy change was determined using the temperature dependences of the magnetization and Maxwell’s thermodynamic relation. The obtained results for TbCo2Nix were compared with those for the ErCo2Mnx alloys.

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Magnetic properties of the off-stoichiometric GdNi2Mnx alloys

Cited by 22 publications

References 17 publications

Tuning the magnetic and structural transitions in TbCo2Mnx compounds

Tuning the magnetic and structural transitions in TbCo2Mnx compounds

Crystal structure, magnetic and thermal properties of the non-stoichiometric alloys Tb0.95Pd2.20Mn0.85 and Dy1.00Pd2.15Mn0.85

Magnetic properties of the non-stoichiometric TbCo₂Ni_x alloys

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Magnetic properties of the off-stoichiometric GdNi2Mnx alloys

Cited by 22 publications

References 17 publications

Tuning the magnetic and structural transitions in TbCo2Mnx compounds

Tuning the magnetic and structural transitions in TbCo2Mnx compounds

Crystal structure, magnetic and thermal properties of the non-stoichiometric alloys Tb0.95Pd2.20Mn0.85 and Dy1.00Pd2.15Mn0.85

Magnetic properties of the non-stoichiometric TbCo2Nix alloys

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Magnetic properties of the non-stoichiometric TbCo₂Ni_x alloys