Magnetic properties of alkaline earth and lanthanoid iron antimonides AFe4Sb12 (A = Ca, Sr, Ba, LaNd, Sm, Eu) with the LaFe4P12 structure

Danebrock, Martin E.; Evers, Christoph B.H.; Jeitschko, Wolfgang

doi:10.1016/0022-3697(95)00277-4

Cited by 189 publications

(117 citation statements)

References 33 publications

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“…We have therefore carried out an investigation of single-crystal specimens of EuT 4 Sb 12 (T = Fe, Ru, Os) filled skutterudite compounds. Our results indicate EuFe 4 Sb 12 and EuRu 4 Sb 12 order magnetically at 89 and 4 K, respectively, and their physical properties are generally consistent with those of the polycrystalline samples previously reported [9][10][11]. The physical properties of EuOs 4 Sb 12 have been investigated for the first time; our measurements show that this compound also exhibits ferromagnetic order with a Curie temperature T C = 9 K.…”

Section: Introductionsupporting

confidence: 88%

“…In addition, the magnetic properties of Co 1−x Fe x Sb 3 (x = 0-0.1 [32], and 0.2 [27] [10,23]. Previous results on polycrystalline samples are also consistent with an (Fe 4 Sb 12 ) polyanion contribution to χ(T ), but could also be analysed assuming a mixed valence state of Eu [9,10,23].…”

Section: Discussionsupporting

confidence: 66%

“…Magnetic measurements on polycrystalline samples of EuFe 4 Sb 12 by Danebrock et al [9] yielded a surprisingly low value of the saturation moment of µ sat = 4.9 µ B /Eu (5 K), compared with the expected value for Eu 2+ (identical to that of Gd 3+ , J = S = 7/2) of M = g J = 7.0 µ B . In addition, after subtracting the magnetic susceptibility of CaFe 4 [10] revealed a partial occupancy of 83% of the Eu sites for this material.…”

Section: Introductionmentioning

confidence: 93%

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Investigation of ferromagnetic filled skutterudite compounds EuT₄Sb₁₂(T = Fe, Ru, Os)

Bauer

Ślebarski

Frederick

et al. 2004

J. Phys.: Condens. Matter

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The physical properties of single crystals of filled skutterudite compounds EuT 4 Sb 12 (T = Fe, Ru, Os) have been investigated by means of x-ray diffraction, electrical resistivity, specific heat, magnetization, and x-ray absorption spectroscopy measurements. The Eu-based materials crystallize in the LaFe 4 P 12 -type structure (space group I m3 appears to exhibit either canted ferromagnetic or ferrimagnetic order at T C = 88 K whereas EuRu 4 Sb 12 and EuOs 4 Sb 12 are ferromagnets with Curie temperatures of T C = 4 and 9 K, respectively. X-ray absorption near edge spectroscopy measurements reveal a nearly divalent Eu electronic configuration for EuT 4 Sb 12 (T = Fe, Ru, Os) with no significant change with T atom or temperature.

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Section: Introductionsupporting

confidence: 88%

Section: Discussionsupporting

confidence: 66%

Section: Introductionmentioning

confidence: 93%

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Investigation of ferromagnetic filled skutterudite compounds EuT₄Sb₁₂(T = Fe, Ru, Os)

Bauer

Ślebarski

Frederick

et al. 2004

J. Phys.: Condens. Matter

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“…As ground state for the Pr atoms the triplet Γ 5 was deduced [5,9,10]. Interestingly, upon increasing the filling fraction to almost 100% a singlet ground state and no magnetic ordering is observed [11].…”

Section: Introductionmentioning

confidence: 92%

“…LaFe 4 Sb 12 is nonmagnetic, at least down to 2 K, with μ eff = 3.0 μ B /fu derived from susceptibility measurements at higher temperatures [5]. Because La 3+ possess no magnetic moment, the measured one has to be attributed to the (Fe 4 Sb 12 )-building block.…”

Section: Introductionmentioning

confidence: 99%

Skutterudites, a thermoelectric material investigated by high field Mössbauer spectroscopy

et al. 2008

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The partly filled skutterudites A x Fe 4 Sb 12 (A = La, Pr, Nd, Eu, Yb, and the monovalent homologue Tl) were investigated at 4.2 K by 57 Fe Mössbauer spectroscopy in external fields up to 13.5 T. Two Fe sites were identified. The observed relative spectral areas are not for all compounds in agreement with filling factors for the A-atoms determined from X-ray experiments. The change in sign and the small value of the induced hyperfine fields for magnetically ordered compounds are strong hints for itinerant ferromagnetism with small ordered moments.

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Crystal Structure and Properties of Some Filled and Unfilled Skutterudites: GdFe4P12, SmFe4P12, NdFe4As12, Eu0.54Co4Sb12, Fe0.5Ni0.5P3, CoP3, and NiP3

Jeitschko

Foecker

Paschke

et al. 2000

Z. anorg. allg. Chem.

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The new cubic compound Fe0.5Ni0.5P3 (a = 775.29(5) pm) as well as the known compounds CoP3 and NiP3 were synthesized from the elemental components using tin as a flux. Their skutterudite (CoAs3) type structures were refined from single‐crystal X‐ray data. The new compound GdFe4P12 was prepared by reaction of an alloy Gd1/3Fe2/3 with phosphorus in a tin flux. Its cubic “filled” skutterudite (LaFe4P12 type) structure was refined from single‐crystal X‐ray data: a = 779.49(4) pm, R = 0.019 for 304 structure factors and 11 variable parameters. SmFe4P12 shows Van Vleck paramagnetism while GdFe4P12 is a soft ferromagnet with a Curie temperature of TC = 22(5) K. Both are metallic conductors. The new isotypic polyarsenide NdFe4As12 (a = 830.9(1) pm) was obtained by reacting NdAs2 with iron and arsenic in the presence of a NaCl/KCl flux. The new isotypic polyantimonide Eu0.54(1)Co4Sb12 (a = 909.41(8) pm) was prepared by reaction of EuSb2 with cobalt and antimony. Its structure was refined from single‐crystal X‐ray data to a residual of 0.024 (137 F values, 12 variables). A comparison of the Fe–P and P–P bond lengths in the compounds AFe4P12, where the A atoms (A = Ce, Eu, Gd, Th) have differing valencies, suggests that the Fermi level cuts through Fe–P bonding and P–P antibonding bands.

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Magnetic properties of alkaline earth and lanthanoid iron antimonides AFe4Sb12 (A = Ca, Sr, Ba, LaNd, Sm, Eu) with the LaFe4P12 structure

Cited by 189 publications

References 33 publications

Investigation of ferromagnetic filled skutterudite compounds EuT₄Sb₁₂(T = Fe, Ru, Os)

Investigation of ferromagnetic filled skutterudite compounds EuT₄Sb₁₂(T = Fe, Ru, Os)

Skutterudites, a thermoelectric material investigated by high field Mössbauer spectroscopy

Crystal Structure and Properties of Some Filled and Unfilled Skutterudites: GdFe4P12, SmFe4P12, NdFe4As12, Eu0.54Co4Sb12, Fe0.5Ni0.5P3, CoP3, and NiP3

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Magnetic properties of alkaline earth and lanthanoid iron antimonides AFe4Sb12 (A = Ca, Sr, Ba, LaNd, Sm, Eu) with the LaFe4P12 structure

Cited by 189 publications

References 33 publications

Investigation of ferromagnetic filled skutterudite compounds EuT4Sb12(T = Fe, Ru, Os)

Investigation of ferromagnetic filled skutterudite compounds EuT4Sb12(T = Fe, Ru, Os)

Skutterudites, a thermoelectric material investigated by high field Mössbauer spectroscopy

Crystal Structure and Properties of Some Filled and Unfilled Skutterudites: GdFe4P12, SmFe4P12, NdFe4As12, Eu0.54Co4Sb12, Fe0.5Ni0.5P3, CoP3, and NiP3

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Investigation of ferromagnetic filled skutterudite compounds EuT₄Sb₁₂(T = Fe, Ru, Os)

Investigation of ferromagnetic filled skutterudite compounds EuT₄Sb₁₂(T = Fe, Ru, Os)