Magnetism and superconductivity in<i>R</i>PtSi (<i>R</i>=La, Ce, Nd, and Sm)

Ramakrishnan, S.; Ghosh, K.; Chinchure, Arvind D.; Marathe, V. R.; Chandra, Girish

doi:10.1103/physrevb.52.6784

Cited by 42 publications

(28 citation statements)

References 37 publications

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“…The neutron diffraction in TbPtIn shows an AFM structure described by wave vector It has been observed that CePtSi shows heavy fermion, which does not show any magnetic ordering down to 70 mK and has enhanced γ=800 mJ/mol K 2 , which also confirms the Kondo behavior of this compound [420]. In RPtSi series, compound with R=Nd shows AFM ordering below TN=3.8 K, R=Sm shows FM ordering below 15 K and R=La shows superconductivity below 3.8 K [421]. The heat capacity data in NdPtSi and SmPtSi show large contribution from CEF effect [421].…”

Section: Rptx Compoundssupporting

confidence: 59%

“…In RPtSi series, compound with R=Nd shows AFM ordering below TN=3.8 K, R=Sm shows FM ordering below 15 K and R=La shows superconductivity below 3.8 K [421]. The heat capacity data in NdPtSi and SmPtSi show large contribution from CEF effect [421]. Isothermal magnetization data show metamagnetic transition at 2 K in NdPtSi.…”

Section: Rptx Compoundsmentioning

confidence: 99%

“…The low temperature resistivity data in LaPtSi, NdPtSi and SmPtSi were fitted by power law relation [421]. The resistivity in CePtGe does not show any change at high temperatures on the application of pressure, however at low temperatures the shoulder accentuates on increasing pressure upto the highest pressure of 17.4 kbar [478].…”

Section: Magneto-transport Propertiesmentioning

confidence: 99%

“…LaPtSi shows a jump at 3.8 K, which corresponds to the superconducting transition temperature [421]. The low temperature resistivity data in LaPtSi, NdPtSi and SmPtSi were fitted by power law relation [421].…”

Section: Magneto-transport Propertiesmentioning

confidence: 99%

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Review on magnetic and related properties of RTX compounds

Gupta

Суреш

2015

Journal of Alloys and Compounds

261

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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Section: Rptx Compoundssupporting

confidence: 59%

Section: Rptx Compoundsmentioning

confidence: 99%

Section: Magneto-transport Propertiesmentioning

confidence: 99%

Section: Magneto-transport Propertiesmentioning

confidence: 99%

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Review on magnetic and related properties of RTX compounds

Gupta

Суреш

2015

Journal of Alloys and Compounds

261

124

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“…The value of the ratio ∆C p /γT c is 0.2 which is significantly reduced from the BCS value of 1.43. Low values of ∆C p /γT c have been observed before in the heatcapacity study of several superconducting compounds 22,23 . According to these studies the reduced jump across T c could arise from extrinsic effect (such as inhomogeneity in the sample or magnetic impurities) or from intrinsic effect (such as the existence of regions which do not participate in superconductivity).…”

Section: B Magnetic Susceptibility Studiesmentioning

confidence: 99%

Superconductivity in Noncentrosymmetric BiPd System

Joshi¹,

Thamizhavel²,

Ramakrishnan³

et al. 2011

AIP Conference Proceedings

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In this work, we establish the bulk superconductivity of a high quality sample of monoclinic BiPd (α-BiPd, space group P2 1 ) below 3.87 K by studying its electrical resistivity, magnetic susceptibility and heat capacity. We show that it is clean type-II superconductor with moderate electron-phonon coupling and determine its superconducitng and normal state parameters. Although α-BiPd is a noncentrosymmetric superconductor with large electronic heat capacity (therefore, large γ), the effect of spin-orbit splitting of the electronic bands at the Fermi level is small. This makes little influence on the superconducting properties of α-BiPd. Ms number

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