The new hydrides CeNiGeH1.6 and CeCuGeH1.0 crystallizing in the derivative hexagonal ZrBeSi-type structure

Chevalier, Bernard; Pasturel, Mathieu; Weill, François; Decourt, Rodolphe; Étourneau, J.

doi:10.1016/j.jssc.2003.09.003

Cited by 21 publications

(23 citation statements)

References 26 publications

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“…However, a comparison with the magnetic behaviour of two other mixed cerium valence state intermetallics, CeNiIn [14] and CeNiGe [15], shows that their electronic structure behaviours do not correlate with the crystallographic changes upon hydrogenation. In CeNiInH 1.8 [14] pure trivalent cerium is observed while the hydrogen occupied tetrahedral Ce 3 Ni site is relatively small, 0.53Å.…”

Section: Discussionmentioning

confidence: 93%

Ce-valence state and hydrogen-induced volume effects in Ce-based intermetallic compounds and their hydrides

Stange

Paul‐Boncour

Latroche

et al. 2005

Journal of Alloys and Compounds

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Section: Discussionmentioning

confidence: 93%

Ce-valence state and hydrogen-induced volume effects in Ce-based intermetallic compounds and their hydrides

Stange

Paul‐Boncour

Latroche

et al. 2005

Journal of Alloys and Compounds

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“…In the case of CeNiGeH 1.6(1) , the intermediate valence state remains but the Kondo effect is strongly decreased [10]. In these examples, hydrogenation acts like a negative pressure and similar modifications of physical behaviour are obtained by substituting nickel by a larger element as Pt or Pd.…”

Section: Introductionmentioning

confidence: 82%

Hydrogenation of the ternary silicides RENiSi (RE=Ce, Nd) crystallizing in the tetragonal LaPtSi-type structure

Pasturel¹,

Weill²,

Bourée³

et al. 2005

Journal of Alloys and Compounds

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“…It has been observed that parent compound has FM ordering, while its hydride is paramagnetic down to 1.8 K [504].…”

Section: Hydrogenation Of Rtx Compoundsmentioning

confidence: 99%

Review on magnetic and related properties of RTX compounds

Gupta

Суреш

2015

Journal of Alloys and Compounds

256

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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The new hydrides CeNiGeH1.6 and CeCuGeH1.0 crystallizing in the derivative hexagonal ZrBeSi-type structure

Cited by 21 publications

References 26 publications

Ce-valence state and hydrogen-induced volume effects in Ce-based intermetallic compounds and their hydrides

Ce-valence state and hydrogen-induced volume effects in Ce-based intermetallic compounds and their hydrides

Hydrogenation of the ternary silicides RENiSi (RE=Ce, Nd) crystallizing in the tetragonal LaPtSi-type structure

Review on magnetic and related properties of RTX compounds

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