Magnetic properties of RAgSn (R  Nd, Tb, Ho) compounds

Bażela, W.; Guillot, M.; Leciejewicz, J.; Małetka, K.; Szytuła, A.; Tomkowicz, Z.

doi:10.1016/0304-8853(94)01492-2

Cited by 16 publications

(8 citation statements)

References 13 publications

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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%

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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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Section: Electronic Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2000

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“…Additionally, structural transition from LiGaGetype to the high pressure modification with ZrNiAl-type was observed for ErAgSn compound (Matar et al 2012). Numerous magnetic property investigations of RAgSn intemetallics with magnetic rare-earths display that antiferromagnetic interaction is predominant in these compounds at low temperatures (Adam et al 1990;Bazela et al 1995;Baran et al 1997), TmAgSn is Curie-Weiss paramagnet down to 2 K, while YAgSn and LuAgSn intermetallics showed Pauli paramagnetism (Sebastian et al 2006). As reported in Pöttgen et al (1999), YbAgSn stannide is characterized by Pauli paramagnetism caused by divalent state of Yb atoms and metallic type of conductivity.…”

Section: Introductionmentioning

confidence: 98%

Structural, magnetic and electronic transport studies of RAgSn2 compounds (R = Y, Tb, Dy, Ho and Er) with Cu3Au-type

Romaka

Lototska

et al. 2013

Bull Mater Sci

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RAgSn 2 compounds, where R = Y, Tb, Dy, Ho and Er, were synthesized by arc-melting and subsequent annealing at 870 K. The formation of cubic phases with Cu 3 Au-type structure (space group Pm3m) was studied. Magnetic property measurements showed that in paramagnetic state, the compounds with magnetic rareearth atoms are Curie-Weiss paramagnets and order antiferromagnetically at low temperatures. YAgSn 2 is a Pauli paramagnet in 100-300 K temperature range. The electrical properties of RAgSn 2 compounds were investigated by means of electrical resistivity and Seebeck coefficient measurements in 4•2-300 K temperature range. All investigated compounds exhibit metallic type of conductivity. Electronic structure calculations based on full potential linearized augmented plane wave (FLAPW) method is also carried out to probe the magnetic and electronic structures of RAgSn 2 compounds. Comparisons between experimental data and calculations are discussed.

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“…The temperature dependence of the magnetic susceptibility discussed in ref. [6] showed that the transition temperature of NdAgSn is T N = 9 K. The same authors in ref. [4] present magnetic and neutron diffraction data with the critical temperatures T M = 11.5 K and T ND = 13 K, respectively.…”

Section: Ndagsnmentioning

confidence: 69%

“…On the other hand, the authors of refs. [4][5][6][7], taking into account neutron powder diffraction data, claim that these stannides adopt the hexagonal LiGaGe-type of crystal structure with Au(Ag) and Sn atoms localized in separate lattice sites. At low temperatures the majority of these compounds are ordered antiferromagnetically.…”

Section: Introductionmentioning

confidence: 99%