Crystal and magnetic structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>TbNi</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:mtext>Mn</mml:mtext></mml:mrow></mml:math>

Мушников, Н. В.; Гавико, В. С.; Park, J.; Пирогов, А. Н.

doi:10.1103/physrevb.79.184419

Cited by 25 publications

(39 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Their Curie temperatures were found to be considerably higher than that of the corresponding RNi 2 compounds whereas the spontaneous magnetic moments are smaller than that of the corresponding RNi 2 alloys [5,6]. In the RNi 2 Mn alloys, it is assumed that the Ni atoms have a negligible magnetic moment whereas Mn atoms possess a large magnetic moment directed opposite to that of the R atoms.…”

Section: Introductionmentioning

confidence: 91%

See 1 more Smart Citation

Magnetic and electrical properties of RCo2Mn (R=Ho, Er) compounds

Maji

Суреш

Nigam

2010

Journal of Magnetism and Magnetic Materials

View full text Add to dashboard Cite

The RCo2Mn (R= Ho and Er) alloys, crystallizing in the cubic MgCu2-type structure, are isostructural to RCo2 compounds. The excess Mn occupies both the R and the Co atomic positions. Magnetic, electrical and heat capacity measurements have been done in these comounds. The Curie temperature is found to be 248 K and 222 K for HoCo2Mn and ErCo2Mn respectively, which are considerably higher than that of the corresponding RCo2 compounds. Saturation magnetization values calculated in these samples are less compared to that of the corresponding RCo2 compounds. Heat capacity data have been fitted with the nonmagnetic contribution with Debye temperature =250 K and electronic coefficient=26 mJ mol^-1K^-2.Comment: 13 pages, 5 figures, 2 table

show abstract

Section: Introductionmentioning

confidence: 91%

“…In the RNi 2 Mn alloys, it is assumed that the Ni atoms have a negligible magnetic moment whereas Mn atoms possess a large magnetic moment directed opposite to that of the R atoms. [5,6]. Considering the similarities between RNi 2 and RCo 2 compounds, it is of importance to study such an influence of Mn on the latter compounds as well.…”

Section: Introductionmentioning

confidence: 99%

Magnetic and electrical properties of RCo2Mn (R=Ho, Er) compounds

Maji

Суреш

Nigam

2010

Journal of Magnetism and Magnetic Materials

View full text Add to dashboard Cite

show abstract

“…Such a moment is surprisingly small for a ferromagnetic state; this result suggests that the Mn magnetic moment may be antiparallel across the 8a and 16d sites for which approximately equal occupancy has been found through x-ray diffraction. 13 If Mn atoms at these two sites are ordered in opposite directions, then XMCD will only be able to detect the small amount of net moment even though a moment as large as 1.4 μ B has been reported by neutron diffraction 14 which is, of course, used to determine the full magnetic moment from the antiferromagnetic state. Antiparallel magnetic coupling of Mn across the two sublattices (z=1/8, 5/8 and 3/8, 7/8) at the 16d sites has been observed in TbMn 2 by neutron diffraction.…”

Section: Resultsmentioning

confidence: 99%

“…This class of materials normally crystallizes in the MgCu 2 -type Laves phase (C15 space group Fd-3m). 13 However, a different phase of structure (C15b space group F-43m) has also been reported for TbNi 2 Mn by Mushnikov et al (2009). 14…”

Section: Introductionmentioning

confidence: 96%

Direct evidence of Ni magnetic moment in TbNi2Mn—X-ray magnetic circular dichroism

Mei-Chun

Wang

et al. 2014

Journal of Magnetism and Magnetic Materials

View full text Add to dashboard Cite

We have investigated the individual magnetic moments of Ni, Mn and Tb atoms in the intermetallic compound TbNi2Mn in the Laves phase (magnetic phase transition temperature TC ∼131 K) by X-ray magnetic circular dichroism (XMCD) studies at 300 K, 80 K and 20 K. Analyses of the experimental results reveal that Ni atoms at 20 K in an applied magnetic field of 1 T carry an intrinsic magnetic moment of spin and orbital magnetic moment contributions 0.53±0.01 μB and 0.05±0.01 μB, respectively. These moment values are similar to those of the maximum saturated moment of Ni element. A very small magnetic moment of order AbstractWe have investigated the individual magnetic moments of Ni, Mn and Tb atoms in the intermetallic compound TbNi 2 Mn in the Laves phase (magnetic phase transition temperature T C ~ 131 K) by xray magnetic circular dichroism (XMCD) studies at 300 K, 80 K and 20 K. Analyses of the experimental results reveal that Ni atoms at 20 K in an applied magnetic field of 1 T carry an intrinsic magnetic moment of spin and orbital magnetic moment contributions 0.53 ± 0.01 μ B and 0.05 ± 0.01 μ B , respectively. These moment values are similar to those of the maximum saturated moment of Ni element. A very small magnetic moment of order < 0.1 μ B has been measured for Mn. This suggests that Mn is antiferromagnetically ordered across the two nearly equally occupied sites of 16d and 8a. A magnetic moment of up to ~0.3 μ B has been observed for the Tb atoms.Identification of a magnetic moment on the Ni atoms has provided further evidence for the mechanism of enhancement of the magnetic phase transition temperature in TbNi 2 Mn compared 2 with TbNi 2 (T C ~ 37.5 K) and TbMn 2 (T C ~ 54 K) due to rare earth-transition metal (R-T) and transition metal -transition metal (T-T) interactions. The behaviour of the x-ray magnetic circular dichroism spectra of TbNi 2 Mn at 300 K, 80 K and 20 K -above and below the magnetic ordering temperature T C ~ 131 K -is discussed.

show abstract

“…Rietveld refinements of x-ray and neutron diffraction patterns of RNi 2 Mn compounds, demonstrated that Mn atoms occupy two inequivalent crystal sites: the 8a and 16d [1,2,4,5]. As part of our systematic investigation of the magnetic properties of this novel RNi 2 Mn system, here we present a detailed investigation of the critical magnetic behavior of DyNi 2 Mn( 57 Fe) around the magnetic transition temperature by DC magnetisation (10-300 K) and 57 Fe Mössbauer spectroscopy measurements.…”

Section: Introductionmentioning

confidence: 99%

DyNi2Mn—magnetisation and Mössbauer spectroscopy

et al. 2011

View full text Add to dashboard Cite

The physical properties of DyNi 2 Mn doped with 57 Fe have been investigated by X-ray diffraction, magnetisation (10-300 K) and 57 Fe Mössbauer spectroscopy measurements (5-300 K). DyNi 2 Mn( 57 Fe) crystallizes in the MgCu 2 -type cubic structure (Fd − 3m space group). The ordering temperature is found to be T C = 99(2) K, much higher than those of DyNi 2 (∼22 K) and DyMn 2 (∼35 K). Analyses of isothermal M-H curves and the related Arrott plots confirm that the magnetic phase transition at T C is second order. The magnetic entropy change around T C is 4.0 J/kg K for a magnetic field change of 0 T to 5 T. The spectra above T C exhibit features consistent with quadrupolar effects while below T C the spectra exhibit magnetic hyperfine splitting. The Debye temperature for DyNi 2 Mn has been determined as θ D = 200(20) K from a fit to the variable temperature isomer shift IS(T).

show abstract

Crystal and magnetic structure ofTbNi2Mn

Cited by 25 publications

References 19 publications

Magnetic and electrical properties of RCo2Mn (R=Ho, Er) compounds

Magnetic and electrical properties of RCo2Mn (R=Ho, Er) compounds

Direct evidence of Ni magnetic moment in TbNi2Mn—X-ray magnetic circular dichroism

DyNi2Mn—magnetisation and Mössbauer spectroscopy

Contact Info

Product

Resources

About