Magnetic structure of TbAgSn and HoAgSn

Bażela, W.; Leciejewicz, J.; Małetka, K.; Szytuła, A.

doi:10.1016/0304-8853(92)90281-r

Cited by 19 publications

(7 citation statements)

References 9 publications

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“…and paramagnetic Curie temperature Θp obtained from the Curie-Weiss fit to the experimental data for all these compounds and values of the critical temperature of magnetic ordering are given in Table. The values of the effective magnetic moments are close to the free ion values g√ J(J + 1) (see Table). It indicates that magnetic moments are localized only on the rare earth atoms and it agrees with the results of the neutron diffraction studies [4,5]. A small disagreement observed for the experimental values and the rare earth's free-ion values of the magnetic moments results from a strong coupling of the conduction electrons with the localized moments.…”

Section: Experiments and Resultssupporting

confidence: 86%

Susceptibility of the Rare Earth Ternary RNiSi₂and RNiGe₂Compounds

et al. 1994

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Section: Experiments and Resultssupporting

confidence: 86%

Susceptibility of the Rare Earth Ternary RNiSi₂and RNiGe₂Compounds

et al. 1994

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“…The obtained results (presented in Figs. [5][6][7][8] indicate that the valence band of these compounds is displayed by a strong peak corresponding to the Ag 4d state at 5.5 eV and Sn 5s state about 7.5 eV for the LiGaGe-type structure. The data obtained for the CaIn2-type structure are different.…”

Section: Electronic Structurementioning

confidence: 99%

“…The RAgSn compounds, except for EuAgSn, were found by X-ray diffraction to crystallize in the *corresponding author; e-mail: szytula@if.uj.edu.pl (571) hexagonal CaIn2-type structure [2] but new neutron diffraction data show that these compounds have the hexagonal LiGaGe-type structure in which Ag and Sn atoms are in two sublattices [3]. Magnetic susceptibility and electric conductivity measurements [4,5], supplemented by neutron diffraction studies, show that these compounds exhibit an antiferromagnetic ordering at low temperatures [3,6,7]. This paper reports on the results of X-ray photoemission spectroscopy (XPS) measurements for RAgSn (R = Ce,Pr,Nd,Dy) compounds.…”

Section: Introductionmentioning

confidence: 99%

Electronic and Transport Properties of Ragsn (R=Ce,Pr,Nd,Dy) Compounds

et al. 2000

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The electronic structure of the ternary RAgSn (R=Ce,Pr,Nd,Dy) compounds which crystallize in the hexagonal LiGaGe-type structure was studied by X-ray photoemission spectroscopy. Core-levels and valence bands were investigated. The X-ray photoemission spectroscopy valence bands are compared with the ones calculated using the spin-polarized tight-binding linear muffin-tin orbital method. The obtained results indicate that the valence bands are mainly determined by the Ag 4d band. The spin-orbit splitting values Δso determined from the XPS spectra of 3d512 and 3d3/2 are equal to 18.8 eV for R = Ce, 20.2 eV for R = Pr and 22.6 eV for R = Nd. The analysis of these spectra on the basis of the Gunnarsson-Schönhammer model gives a hybridization of f orbitals with the conduction band. The calculation of the total energy for two models of the crystal structure: an ordered of the LiGaGe-type and a disordered one of the CaIn2-type indicate that in these compounds 'the LiGaGe-type structure is stable. Additionally, the temperature dependences of the electrical resistivity of CeAgSn and DyAgSn are investigated. At high temperatures the resistivity is not a linear function of temperature which indicates an electron-phonon interaction in the presence of a small s-d scattering, whereas at low temperatures anomalies connected with the magnetic phase transitions are observed.

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“…Absence of the ordering of the rare earth magnetic moments, indicated by the neutron diffraction data, was however observed also for TbFe 0.5 Ge 2 that was the only exception amongst the compounds of this series up to now [17]. The Tb and Dy magnetic moments normally do order at low temperatures, like for example in both stoichiometric and non-stoichiometric germanides containing Ni or Cu [18][19][20], in silicides containing Co or Ni [21][22][23] and then also in stannides with Co or Ni [15,16]. Table 5 Basic vectors of the irreducible representations for k = (k x , k x , 0) of the Cmcm space group in the 4c positions (0, y, 1/4) (0, 1 − y, 3/4) (1/2, 1/2 + y, 1/4) (1/2, 1/2 − y, 3/4) k τ 1 First orbit (0, 0, 1) (0, 0, e iϕ ) Second orbit (0, 0, 1) (0, 0, 1) For the considerable majority of the 1:2:2 compounds the structures found are collinear.…”

Section: Discussionmentioning

confidence: 91%