High-pressure study of non-Fermi liquid and spin-glass-like behavior in CeRhSn

Zocco, D. A.; Ślebarski, A.; Maple, M. B.

doi:10.1088/0953-8984/24/27/275601

Cited by 5 publications

(3 citation statements)

References 34 publications

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“…The high-pressure study on CeRhSn shows that features associated with quantum coherence move to higher temperatures [597]. The effect of pressure on TN (using heat capacity data) of CePdAl is insensitive in the low pressure but show a decrease at higher pressures [598].…”

Section: High Pressure Studymentioning

confidence: 97%

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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Section: High Pressure Studymentioning

confidence: 97%

Review on magnetic and related properties of RTX compounds

Gupta

Суреш

2015

Journal of Alloys and Compounds

257

124

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“…These materials show versatile magnetic, electronic and structural properties, which change with varying of R or T elements. The diversity of physical characteristics of RTSn compounds such as large magnetoresistance and magnetocaloric effects, metamagnetic transitions, spin glass state, Kondo effect, heavy electron behavior, superconductivity and other have attracted much attention and allow them to become promising objects for fundamental and applied studies [1][2][3][4][5][6][7][8]. The numerous investigations show that the above-mentioned properties are occurring due to hybridization peculiarities of the rare-earth 4f and the conduction electronic states.…”

Section: Introductionmentioning

confidence: 99%

Electronic structure of DyRhSn and HoRhSn compounds: band calculations and optical study

et al. 2019

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In this paper experimentally measured optical properties of intermetallic ternary compounds DyRhSn and HoRhSn are reported together with the spin-polarized calculations of the electronic structure within DFT+U method, accounting for electronic correlation effects in the 4f shell of Dy and Ho. A number of spectral and electronic characteristics are determined. The performed calculations allow one to qualitatively interpret the energy dependencies of the interband optical conductivity extracted from experimental ellipsometry measurements. Electronic structure calculationsTheoretical investigation of the electronic structure was carried out within the DFT + U method [17], for a recent review, see [18]. The values of direct Coulomb U = 5.9 eV

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“…The interplay of non-Fermi liquid and spin-glass-like behavior in CeRhSn was studied up to pressures of 2.7 GPa. 13 One of the outstanding materials in the large family of equiatomic CeTX compounds is the stannide CeRuSn. [14][15][16][17][18][19][20][21][22][23][24][25][26][27] Above room temperature one observes a CeCoAl related superstructure with an ordering of intermediate-valent and trivalent cerium and a transition to an incommensurately ordered state in going to lower temperature.…”

Section: Introductionmentioning

confidence: 99%

A ZrNiAl related high-pressure modification of CeRuSn

et al. 2016

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Monoclinic CeRuSn with its own structure type transforms to a high-pressure modification at 11.5 GPa and 1470 K (1000 t press, Walker type module). The structure of the high-pressure phase was refined from X-ray single crystal diffractometer data at room temperature. The HP-CeRuSn subcell structure adopts the ZrNiAl type: P6[combining macron]2m, a = 751.4(3) and c = 394.6(2) pm, wR2 = 0.0787, 310 F(2) values and 15 variables. The Ru2 atoms within the Sn6 trigonal prisms show a strongly enhanced U33 parameter. Weak satellite reflections indicate a commensurate modulation: (3 + 1)D superspace group P31m(1/3,1/3,γ)000, a = 751.4(3) and c = 394.6(2) pm, γ = -1/3, wR2 = 0.0786, 1584 F(2) values, 32 variables for the main reflections and wR2 = 0.3757 for the satellites of 1(st) order. A description of this new superstructure variant of the ZrNiAl type is possible in a transformed 3D supercell with the space group R3m and Z = 9. The driving force for formation of the modulation is strengthening of Ru-Sn bonding within the comparatively large Ru@Sn6 trigonal prisms. Electronic structure calculations point to an almost depleted Ce 4f shell. This is substantiated by temperature-dependent magnetic susceptibility data. Fitting of the data within the interconfiguration fluctuation model (ICF) resulted in cerium valences of 3.41 at 10 K and 3.31 at 350 K. Temperature dependent specific heat data underline the absence of magnetic ordering.

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High-pressure study of non-Fermi liquid and spin-glass-like behavior in CeRhSn

Cited by 5 publications

References 34 publications

Review on magnetic and related properties of RTX compounds

Review on magnetic and related properties of RTX compounds

Electronic structure of DyRhSn and HoRhSn compounds: band calculations and optical study

A ZrNiAl related high-pressure modification of CeRuSn

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