Spin glass anomalies in HP-NdPtSn—structural, magnetic and specific heat studies

Heymann, Günter; Rayaprol, Sudhindra; Riecken, Jan F.; Hoffmann, Rolf‐Dieter; Rodewald, Ute Ch.; Huppertz, Hubert; Pöttgen, Rainer

doi:10.1016/j.solidstatesciences.2006.05.008

Cited by 10 publications

(15 citation statements)

References 35 publications

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“…It has been reported that in CePtSn, magnetic structure can be described by two wave vectors [k1=(0,0.470,0) and k2=(0, 0.428,0)] at 2 K [425]. Subsequently, it was reported that neutron diffraction [425] and μSR [426] show contradictory results, which has been resolved by a spin slip model [427], in which the k vector comes to be incommensurate for both phases is confirmed by heat capacity data [130]. The heat capacity data suggest antiferromagnetic character of SmPtSn with TN=3.5 K [434].…”

Section: Rptx Compoundsmentioning

confidence: 84%

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Review on magnetic and related properties of RTX compounds

Gupta

Суреш

2015

Journal of Alloys and Compounds

260

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 Compoundsmentioning

confidence: 84%

“…The high pressure modification of NdPtSn and CePtSn show change of crystal structure from TiNiSi type orthorhombic to ZrNiAl type hexagonal structure [130,131]. YbPtSn crystallizes in ZrNiAl type hexagonal structure [132].…”

Section: Introductionmentioning

confidence: 98%

Review on magnetic and related properties of RTX compounds

Gupta

Суреш

2015

Journal of Alloys and Compounds

260

124

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“…1 With the successful high-pressure synthesis of the stannides HP-REPtSn (RE = La, Ce, Pr, Nd, Sm) and HP-CePdSn, we recently extended the research into the area of ternary systems. [2][3][4][5] Now, we report the first example of an oxidation of an intermetallic phase under high-pressure/ high-temperature conditions, leading to a new germanide oxide with the composition Ce 4 Ag 3 Ge 4 O 0.5 . The oxidation of intermetallic phases to metal oxides under ambient pressure conditions is well known from the research of Hoppe, Yvon, Schuster, and Jung.…”

Section: Introductionmentioning

confidence: 91%

“…The three-dimensional [CeAg 3 Ge 4 ] network has structural building units, which are well known from various rare earthtransition metal-silicides and germanides. All three crystallographically independent silver atoms have four germanium neighbours at Ag-Ge distances ranging from 263 to 289 pm slightly longer than the sum of the covalent radii of 256 pm.…”

Section: 39mentioning

confidence: 99%

Ce4Ag3Ge4O0.5 – chains of oxygen-centered [OCe2Ce2/2] tetrahedra embedded in a [CeAg3Ge4] intermetallic matrix

et al. 2013

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“…This change in crystal structure seems to be driven by the size of the rare earth elements (lanthanoid contraction). For CePtSn [5] and NdPtSn [6] we could recently show that the phase transition can also occur through application of highpressure and high-temperature. Since this is a recon-0932-0776 / 06 / 1200-1477 $ 06.00 © 2006 Verlag der Zeitschrift für Naturforschung, Tübingen · http://znaturforsch.com structive phase transition, the high-pressure samples can easily be quenched and characterized under ambient pressure conditions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structure and Properties of the High-pressure Modifications of the Ternary Compounds REPtSn (RE = La, Pr, Sm)

Riecken

Rodewald

Heymann

et al. 2006

Zeitschrift Für Naturforschung B

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The hexagonal high-pressure (HP) modifications of the ternary compounds REPtSn (RE = La, Pr, Sm) were prepared under multianvil high-pressure (9 -14 GPa) high-temperature (1050 -1400 • C) conditions from the orthorhombic normal-pressure (NP) modifications. The HP-REPtSn stannides were investigated by X-ray diffraction on powders and single crystals: ZrNiAl type, space group P62m, a = 762.6(2), c = 418.55(7) pm, wR2 = 0.1147, 256 F 2 values and 14 variables for HP-LaPtSn, a = 754.97 (7), c = 412.64(3) pm, wR2 = 0.0782, 252 F 2 values and 14 variables for HP-PrPtSn, and a = 750.1(2), c = 407.6(1) pm, wR2 = 0.1060, 229 F 2 values and 14 variables for HP-SmPtSn. The high-pressure modifications have two crystallographically independent platinum positions in trigonal prismatic coordination, Pt1Sn 6 RE 3 and Pt2Sn 3 RE 6 . The shortest interatomic distances occur between the platinum and tin atoms within the three-dimensional [PtSn] networks. The rare earth atoms fill distorted hexagonal channels within these networks and they are bound through short RE-Pt contacts. Susceptibility measurements of HP-PrPtSn reveal paramagnetic behaviour with an experimental magnetic moment of 3.31(2) µ B /Pr atom. Low-temperature susceptibility and specific heat data point to inhomogeneous magnetism in HP-PrPtSn.

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Spin glass anomalies in HP-NdPtSn—structural, magnetic and specific heat studies

Cited by 10 publications

References 35 publications

Review on magnetic and related properties of RTX compounds

Review on magnetic and related properties of RTX compounds

Ce4Ag3Ge4O0.5 – chains of oxygen-centered [OCe2Ce2/2] tetrahedra embedded in a [CeAg3Ge4] intermetallic matrix

Synthesis, Structure and Properties of the High-pressure Modifications of the Ternary Compounds REPtSn (RE = La, Pr, Sm)

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