Magnetic and Transport Properties of Gd3Ir4Sn13with Unique Crystal Structure

Nagoshi, Chiyoko; Yamamoto, R.; Kuwahara, K.; Sagayama, Hajime; Kawana, Daichi; Kohgi, M.; Sugawara, Hitoshi; Aoki, Yuji; Sato, Hideyuki; Yokoo, Tetsuya; Arai, M.

doi:10.1143/jpsj.75.044710

Cited by 17 publications

(16 citation statements)

References 10 publications

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“…10,11 Doubling of the unit cell has been observed with a non-centrosymmetric I4 1 32 space group in some of the stannides (X = Sn) of R 3 T 4 X 13 . 12,13 Stannides (X = Sn) in this class have been investigated in some detail, for example, Ce 3 Ir 4 Sn 13 14 and Ce 3 Rh 4 Sn 13 15 are classified as heavy-fermion systems where high effective mass or larger density of states at the Fermi level have been observed. The stannide-R 3 T 4 X 13 display superconductivity in the case of R 3 Rh 4 Sn 13 (for R = La, Yb, Ca, Sr, Th) while antiferromagnetism for Gd and Eu.…”

Section: Introductionmentioning

confidence: 99%

“…shows an antiferromagnetic phase transition at 10 K. 17 Nagoshi et al, studied single crystals of Gd 3 Ir 4 Sn 13 using magnetic susceptibility, resistivity, Hall effect and epithermal neutron scattering. 12 They identified a structural distortion characterized by the propagation vector (1/2, 1/2, 0). Only a single magnetic transition was identified at 10 K from macroscopic measurements.…”

Section: Introductionmentioning

confidence: 99%

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Double-phase transition and giant positive magnetoresistance in the quasi-skutterudite Gd3Ir4Sn13

Nair

Ghosh

Kumar

et al. 2016

Journal of Applied Physics

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The magnetic, thermodynamic and electrical/thermal transport properties of the caged-structure quasi-skutterudite Gd 3 Ir 4 Sn 13 are re-investigated. The magnetization M (T ), specific heat C p (T ) and the resistivity ρ(T ) reveal a double-phase transition -at T N 1 ∼ 10 K and at T N 2 ∼ 8.8 K -which was not observed in the previous report on this compound. The antiferromagnetic transition is also visible in the thermal transport data, thereby suggesting a close connection between the electronic and lattice degrees of freedom in this Sn-based quasi-skutterudite. The temperature dependence of ρ(T ) is analyzed in terms of a power-law for resistivity pertinent to Fermi liquid picture. Giant, positive magnetoresistance (MR) ≈ 80% is observed in Gd 3 Ir 4 Sn 13 at 2 K with the application of 9 T. The giant MR and the double magnetic transition can be attributed to the quasi-cages and layered antiferromagnetic structure of Gd 3 Ir 4 Sn 13 vulnerable to structural distortions and/or dipolar or spin-reorientation effects. The giant value of MR observed in this class of 3:4:13 type alloys, especially in a Gd-compound, is the highlight of this work.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Double-phase transition and giant positive magnetoresistance in the quasi-skutterudite Gd3Ir4Sn13

Nair

Ghosh

Kumar

et al. 2016

Journal of Applied Physics

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“…Many members of this family of materials have been observed to undergo a structural distortion to a low temperature structure, the I ′ phase, which reduces the symmetry of the simple cubic parent structure (I phase, P m 3m). A series of diffraction studies have not produced agreement in describing the low temperature I ′ phase [11][12][13][14] . The structure of (Sr,Ca) 3 Ir 4 Sn 13 in the high temperature I-phase is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Electronic structure and phonon instabilities in the vicinity of the quantum phase transition and superconductivity of(Sr,Ca)3Ir4
Tompsett
¹

2014
Phys. Rev. B

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The nature of the lattice instability connected to the structural transition and superconductivity of (Sr,Ca)3Ir4Sn13 is not yet fully understood. In this work density functional theory (DFT) calculations of the phonon instabilities as a function of chemical and hydrostatic pressure show that the primary lattice instabilities in Sr3Ir4Sn13 lie at phonon modes of wavevectors q = (0.5, 0, 0) and q = (0.5, 0.5, 0). Following these modes by calculating the energy of supercells incorporating the mode distortion results in an energy advantage of -14.1 meV and -9.0 meV per formula unit respectively. However, the application of chemical pressure to form Ca3Ir4Sn13 reduces the energetic advantage of these instabilities, which is completely removed by the application of a hydrostatic pressure of 35 kbar to Ca3Ir4Sn13. The evolution of these lattice instabilities is consistent with experimental phase diagram. The structural distortion associated with the mode at q = (0.5, 0.5, 0) produces a distorted cell with the same space group symmetry as the experimentally refined low temperature structure. Furthermore, calculation of the deformation potential due to these modes quantitatively demonstrates a strong electron-phonon coupling. Therefore, these modes are likely to be implicated in the structural transition and superconductivity of this system.

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“…Positional disorder of the X atom or the formation of random mixture of R/T and X atoms is also known [31,32]. Doubling of the unit cell to a noncentrosymmetric I4 1 32 space group has also been observed in some of the stannides of R 3 T 4 X 13 [33,34]. In this paper we investigate a Sm-based quasi-skutterudite named Sm 3 Ru 4 Ge 13 motivated to explore similar physics as has been observed in RT 4 X 12 or RT 2 X 20 concerning exotic heavy fermions states or the field-insensitive phase transitions.…”

Section: Introductionmentioning

confidence: 99%

Field-insensitive heavy fermion features and phase transition in the caged-structure quasi-skutterudite Sm3 Ru4 Ge13

Nair

Kumar

Britz

et al. 2016

Journal of Alloys and Compounds

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Magnetic and Transport Properties of Gd₃Ir₄Sn₁₃with Unique Crystal Structure

Cited by 17 publications

References 10 publications

Double-phase transition and giant positive magnetoresistance in the quasi-skutterudite Gd3Ir4Sn13

Double-phase transition and giant positive magnetoresistance in the quasi-skutterudite Gd3Ir4Sn13

Electronic structure and phonon instabilities in the vicinity of the quantum phase transition and superconductivity of(Sr,Ca)3Ir4
Tompsett
¹

2014
Phys. Rev. B

Field-insensitive heavy fermion features and phase transition in the caged-structure quasi-skutterudite Sm3 Ru4 Ge13

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Magnetic and Transport Properties of Gd3Ir4Sn13with Unique Crystal Structure

Cited by 17 publications

References 10 publications

Double-phase transition and giant positive magnetoresistance in the quasi-skutterudite Gd3Ir4Sn13

Double-phase transition and giant positive magnetoresistance in the quasi-skutterudite Gd3Ir4Sn13

Electronic structure and phonon instabilities in the vicinity of the quantum phase transition and superconductivity of(Sr,Ca)3Ir4Tompsett1 2014Phys. Rev. B

Field-insensitive heavy fermion features and phase transition in the caged-structure quasi-skutterudite Sm3 Ru4 Ge13

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Product

Resources

About

Magnetic and Transport Properties of Gd₃Ir₄Sn₁₃with Unique Crystal Structure

Electronic structure and phonon instabilities in the vicinity of the quantum phase transition and superconductivity of(Sr,Ca)3Ir4
Tompsett
¹

2014
Phys. Rev. B