Kondo and crystal-field effects in the compound YbPtGa

Dt, Adroja; Rainford, BD; Sk, Malik; Gailloux, M.; Ka, Gschneidner

doi:10.1103/physrevb.50.248

Cited by 15 publications

(5 citation statements)

References 13 publications

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“…The resistivity ratio of r(300 K) to r(1.2 K) for IJa and IJc is the same value of 6.8 each other. As compared with r(T) of Lu 5 Rh 4 Ge 10 , there is no magnetic contribution to r(T) for IJa and IJc related to the Kondo-scattering process described by Àln T as reported for YbNiAl and YbPtGa [32,33]. r(T) for IJa and IJc at low temperatures is almost constant down to 1.2 K as shown in the inset of Fig.…”

Section: Article In Pressmentioning

confidence: 63%

Magnetic and transport properties of Yb5T4Ge10 (T=Co, Rh, Ir)

Katoh

Tsutsumi

Yamada

et al. 2006

Physica B: Condensed Matter

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Section: Article In Pressmentioning

confidence: 63%

Magnetic and transport properties of Yb5T4Ge10 (T=Co, Rh, Ir)

Katoh

Tsutsumi

Yamada

et al. 2006

Physica B: Condensed Matter

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“…GPa, indicating the crossover from incoherent Kondo state [477]. The magnetic scattering contribution to the resistivity in YbPtGa shows a behavior consistent with Kondo-type interactions [412]. The resistivity data in PrPtIn and SmPtIn show metallic character with non-linear behavior at high temperatures, which reveals that in addition to the electronphonon scattering, the interband scattering process may also be considered [123].…”

Section: Magneto-transport Propertiesmentioning

confidence: 72%

“…The magnetic anisotropy in susceptibility data of CePtGa suggests the existence of CEF [411]. The susceptibility data in YbPtGa shows a broad peak at 4 K, while the heat capacity data in this compound shows λ-type anomaly at 3.8 K [412].…”

Section: Rptx Compoundsmentioning

confidence: 94%

Review on magnetic and related properties of RTX compounds

Gupta

Суреш

2015

Journal of Alloys and Compounds

257

124

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RTX (R=rare earths, T= 3d/4d/5d, transition metals such as Sc, Ti, Mn, Fe, Co, Ni, Cu, Ru, Rh, Pd, Ag, Os, Ir, Pt, Au, and X=p-block elements such as Al, Ga, In, Si, Ge, Sn, As, Sb, Bi) series is a huge family of intermetallics compounds. These compounds crystallize in different crystal structures depending on the constituents. Though these compounds have been known for a long time, they came to limelight recently in view of the large magnetocaloric effect (MCE) and magnetoresistance (MR) shown by many of them. Most of these compounds crystallize in hexagonal and tetragonal crystal structures. Some of them show crystal structure modification with annealing temperature; while a few of them show iso-structural transition in the paramagnetic regime. Their magnetic ordering temperatures vary from very low temperatures to temperatures well above room temperature (~510 K). Depending on the crystal structure, they show a variety of magnetic and electrical properties.These compounds have been characterized by means of a variety of techniques/measurements such as x-ray diffraction, neutron diffraction, magnetic properties, heat capacity, magnetocaloric properties, electrical resistivity, magnetoresistance, thermoelectric power, thermal expansion, Hall effect, optical properties, XPS, Mössbauer spectroscopy, ESR, μSR, NMR, NQR etc. Some amount of work on theoretical calculations on electronic structure, crystal field interaction and exchange interactions has also been reported. The interesting aspect of this series is that they show a variety of physical properties such as Kondo effect, heavy fermion behavior, spin glass state, intermediate valence, superconductivity, multiple magnetic transitions, metamagnetism, large MCE, large positive as well as negative MR, spin orbital compensation, magnetic polaronic behavior, pseudo gap effect etc.Except Mn, no other transition metal in these compounds possesses considerable magnetic moments.Because of this RMnX compounds in general have high ordering temperatures. Interstitial modification using hydrogen and nitrogen is found to alter their crystal structures and magnetic properties considerably. RTX compounds also show interesting pressure effects on their structural and magnetic properties. In summary, these compounds show variety of physical properties over a wide range of temperatures. This review is intended to cover all the important results obtained in this family, particularly in the last few years.

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“…CePdSb [3] and YbNiSn [4]) and antiferromagnetic (e.g. CePdGa [5], YbPtGa [6] and CePtGa [7,8]) Kondo lattice behaviour, and heavy fermion behaviour (e.g. YbPdSb [9] and YbPtBi [10]).…”

Section: Introductionmentioning

confidence: 99%

“…YbPdSb [9] and YbPtBi [10]). The orthorhombic TiNiSi-type (space group Pnma) structural compounds such as CePtGa [7,8], CePdGa [5] and YbPtGa [6] show marked crystalfield interactions associated with the Kondo effect. The crystal symmetry plays a central role in determining the Kondo properties through the effect of the crystalline electric field (CEF) acting on the 4f orbitals.…”

Section: Introductionmentioning

confidence: 99%

Chemical pressure and magnetic field effects in CePtGa

Ragel

Plessis

Strydom

2007

J. Phys.: Condens. Matter

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The antiferromagnetic Kondo compound CePtGa and the Ce(Pt 1−x Ni x )Ga and CePt(Ga 1−y Al y ) alloy systems have been studied by resistivity ρ(T ), magnetoresistivity MR and susceptibility χ(T ) measurements on polycrystalline samples to temperatures as low as 1.5 K and in magnetic fields up to 9 T. A Doniach diagram is presented of the volume dependences of the Néel temperature T N and Kondo temperature T K of these alloys and the possible existence of a quantum critical point near x = 0.38 is indicated. χ(T ) measurements in different applied fields indicate a marked decrease in T N with field for the parent CePtGa compound and extrapolation of the results suggests that magnetic order should disappear in a field of 4.8 T. In contrast the Kondo energy scale, identified by a maximum in ρ(T ) at low temperatures, increases significantly with field.

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Kondo and crystal-field effects in the compound YbPtGa

Cited by 15 publications

References 13 publications

Magnetic and transport properties of Yb5T4Ge10 (T=Co, Rh, Ir)

Magnetic and transport properties of Yb5T4Ge10 (T=Co, Rh, Ir)

Review on magnetic and related properties of RTX compounds

Chemical pressure and magnetic field effects in CePtGa

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