Complex antiferromagnetic order of CeCuSn

Nakotte, H.; Brück, E.H.; Prokeš, K.; Brabers, J.H.V.J.; Boer, F.R. de; Havela, L.; Buschow, K.H.J.; Fu, Yang

doi:10.1016/0925-8388(94)90213-5

Cited by 20 publications

(17 citation statements)

References 8 publications

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“…The top panel shows the zero field cooled (ZFC) and field cooled (FC) χ(T ) curves for α-CeCuSn measured in a field of 100 Oe. Earlier heat capacity studies of annealed CeCuSn have shown two magnetic transitions at 8.6 and 7.4 K [12]. Consistent with these temperatures, there is a sudden rise in χ(T ) of α-CeCuSn around 8.6 K as if it were a ferromagnetic ordering (vide infra).…”

Section: Physical Property Measurementssupporting

confidence: 55%

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Structure and Properties of α- and β-CeCuSn: A Single Crystal and Mössbauer Spectroscopic Investigation

Sebastian¹,

Rayaprol²,

Hoffmann³

et al. 2007

Zeitschrift Für Naturforschung B

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Two modifications of CeCuSn were prepared from the elements: the high-temperature (β ) modification crystallizes directly from the quenched sample, while the low-temperature (α) modification is formed after annealing at 700 • C for one month. Both modifications were investigated by powder and single crystal X-ray diffraction. We find for β -CeCuSn the ZrBeSi-type structure, space group P6 3 /mmc, a = 458.2(1), c = 793.7(2) pm, wR2 = 0.0727, 148 F 2 values, 8 variable parameters. In the case of α-CeCuSn we find the NdPtSb-type structure, space group P6 3 mc, a = 458.4(1), c = 785.8(2) pm, wR2 = 0.0764, 233 F 2 values, 11 variable parameters. The copper and tin atoms build up layers of ordered [Cu 3 Sn 3 ] hexagons. The layers are planar in β -CeCuSn, however, with highly anisotropic displacements of the copper and tin atoms. In α-CeCuSn a puckering effect is observed resulting in a decrease of the c lattice parameter. Both modifications of CeCuSn exhibit antiferromagnetic ordering, but there is a considerable difference in their magnetic behaviour. Anomalies in the physical properties of the α-and β -modifications of CeCuSn have been detected by Mössbauer spectroscopy and magnetic and specific heat measurements, which serve to explain the structure-property relations.

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Section: Physical Property Measurementssupporting

confidence: 55%

“…Contrary to α-CeCuSn, there is only one steplike anomaly around 7.9(1) K which we consider as T N for β -CeCuSn. It may be recalled that the magnetic phase diagram of CeCuSn given by Nakotte et al indicates that magnetic anisotropy is intrinsic to the CeCuSn compound [12].…”

Section: Physical Property Measurementsmentioning

confidence: 99%

Structure and Properties of α- and β-CeCuSn: A Single Crystal and Mössbauer Spectroscopic Investigation

Sebastian¹,

Rayaprol²,

Hoffmann³

et al. 2007

Zeitschrift Für Naturforschung B

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“…They found that former compound shows AFM ordering with TN= 8 K with a weak spontaneous magnetization while the later compound shows AFM ordering with TN=10 K with no spontaneous magnetization. Nakotte et al [266] reported three magnetic transitions in CeCuSn. They reported that two magnetic transitions, AF1 and AF2, are seen in zero field, while the third magnetic phase transition, AF3 is only stable in an applied field.…”

Section: Rcux Compoundsmentioning

confidence: 99%

Review on magnetic and related properties of RTX compounds

Gupta

Суреш

2015

Journal of Alloys and Compounds

253

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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“…CeCuSn was reported to order antiferromagnetically below T N Ϸ 8.6 K. [3][4][5] . In addition, a broad double-peak feature in the zero-field specific heat was taken to indicate a second magnetic transition at about 7.5 K. 3 Subsequent muon spin relaxation ͑SR͒ experiments indicated an unusual evolution of the magnetic ordering in CeCuSn, starting with the onset of short-range correlations at 11 K leading to spin freezing around 8.6 K, and finally a coexistence of long-range ordered and spin-frozen phases below 7.5 K. 6 Recently, we synthesized single crystals of CeCuSn, allowing us to investigate the magnetic structure in greater detail.…”

mentioning

confidence: 99%

“…The crystal structure of CeCuSn has been reported to be of the hexagonal CaIn 2 type ͑space group P6 3 / mmc͒. 3,5 Singlecrystal x-ray diffraction showed that our CeCuSn samples form in the hexagonal GaGeLi-type crystal structure with lattice parameters a = 4.59 Å and c = 7.90 Å. However, it has also been suggested that CeCuSn may form in an ordered variant, the GaGeLi-type structure ͑space group P6 3 mc͒, which is shown schematically in Fig.…”

mentioning

confidence: 99%