Instabilities of ternary Eu pnictides

Michels, G.; Huhnt, C.; Scharbrodt, W.; Holland‐Moritz, E.; Johrendt, Dirk; Mewis, A.; Schlabitz, W.

doi:10.1016/0921-4526(94)91921-6

Cited by 9 publications

(2 citation statements)

References 3 publications

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“…The structures of EuNiP, EuPdP, and EuPtP are closely related to the ZrBeSi type, but deviations occur with dependence of the europium valence state. This behavior is temperature dependent and tends toward trivalent europium ingoing to lower temperatures. , Normally, intermediate valence states are caused by a fast fluctuation (frequencies of about 10 15 Hz) between the 4f 7 (Eu 2+ ) and 4f 6 (Eu 3+ ) configuration. An intriguing feature is the occurrence of a quasi-static coexistence of Eu 2+ and Eu 3+ , as confirmed by Mössbauer experiments and single-crystal structure determinations .…”

Section: Crystal Chemistrymentioning

confidence: 99%

Equiatomic Intermetallic Europium Compounds: Syntheses, Crystal Chemistry, Chemical Bonding, and Physical Properties

2000

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The crystal chemistry of ternary equiatomic europium compounds EuTX (T ) transition metal; X ) element of the III, IV, or V main group) is reviewed. Besides preparation techniques we have especially focused on the structure-property relationships and peculiarities in chemical bonding. A main interest in these compounds is the valence state of the europium atoms. The magnetic susceptibility and electrical conductivity data, 151 Eu Mössbauer spectroscopic results and L III X-ray absorption experiments are discussed in detail.

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Section: Crystal Chemistrymentioning

confidence: 99%

Equiatomic Intermetallic Europium Compounds: Syntheses, Crystal Chemistry, Chemical Bonding, and Physical Properties

2000

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“…The structures and properties of the ternary mixed-valent metallic compounds EuPtP, EuPdP and EuNiP are reported in refs. [15][16][17][18][19][20]. The crystal structure of EuNiP as well as of EuPdP at room temperature belongs to the P 3m1 space group [15].…”

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confidence: 99%

Verwey-type transition in EuNiP

et al. 2006

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High temperature 151 Eu Mössbauer measurements provide proof for inhomogeneous mixed-valent behaviour in EuNiP. We observed that EuNiP undergoes a Verwey-type charge delocalisation transition when heated above 470 K prior to the structural γ-β phase transition at T ≈ 510 K. This finding confirms the results of photoemission spectroscopy in the isostructural compound EuPdP and of TB-LMTO-ASA band structure calculations. We discuss the role of a van Hove singularity associated with a high density of 4f states close to the Fermi energy in inhomogeneous mixed europium valency, and the microscopic mechanism of γ-β phase transition in compounds analogous to EuNiP.

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1.2.4.1.0 Introduction

Palewski¹,

Suski²

2003

Pnictides and Chalcogenides II (Ternary Lanthanide Pnictides). Part A: 1:1:1 and 1:1:2 Type Compounds

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Instabilities of ternary Eu pnictides

Cited by 9 publications

References 3 publications

Equiatomic Intermetallic Europium Compounds: Syntheses, Crystal Chemistry, Chemical Bonding, and Physical Properties

Equiatomic Intermetallic Europium Compounds: Syntheses, Crystal Chemistry, Chemical Bonding, and Physical Properties

Verwey-type transition in EuNiP

1.2.4.1.0 Introduction

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