Distortion of alpha-uranium structure in praseodymium metal to 311 GPA

Velisavljevic, Nenad; Vohra, Yogesh K.

doi:10.1080/08957950410001717150

Cited by 44 publications

(45 citation statements)

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“…This peak in resistance coincides with a transition to a distorted α-U crystal structure (Pr-V). 36 The diamond anvil cell employed was a mechanically loaded commercial model based on the design by Kyowa Seisakusho Ltd. One of the anvils was a "designer diamond anvil" 37 containing four symmetrically arranged, deposited tungsten microprobes encapsulated in high-quality homo-epitaxial diamond. The designer anvil was beveled with a flat diameter of 100 µm and a culet diameter of ∼300 µm.…”

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Low-temperature electrical resistivity of praseodymium at pressures up to 120 GPa

et al. 2011

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Low-temperature electrical resistivity of praseodymium at pressures up to 120 GPa

et al. 2011

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“…GPa [11]. α-uranium and these lower symmetry forms are regarded as having all the felectrons in them as participating in bonding and are less compressible compared to their preceding phases.…”

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A high pressure distorted α-uranium (Pnma) structure in plutonium

Sikka

2005

Solid State Communications

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“…The pressure was determined from the diffraction peaks of copper which was also loaded into the diamond anvil cell with Er and using the Birch-Murnaghan equation [26] of Eq. 1 with the available equation of state data for the copper pressure standard [27],…”

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confidence: 99%

Magnetic and structural phase transitions in erbium at low temperatures and high pressures

et al. 2011

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Electrical resistance and crystal structure measurements have been carried out on polycrystalline erbium (Er) at temperatures down to 10 K and pressures up to 20 GPa. An abrupt change in the slope of the resistance is observed with decreasing temperature below 84 K which is associated with the c-axis modulated antiferromagnetic (AFM) ordering of the Er moments. With increasing pressure, the temperature of the resistance slope change and the corresponding AFM ordering temperature decrease until vanishing above 10.6 GPa. The disappearance of the slope change in the resistance occurs at similar pressures where the hcp structural phase of Er is transformed to a nine-layer α-Sm structural phase as confirmed by our high-pressure synchrotron X-ray diffraction studies. These results suggest that the disappearance in the antiferromagnetic ordering of Er moments is strongly correlated to the structural phase transition at high pressures and low temperatures. PACS

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Distortion of alpha-uranium structure in praseodymium metal to 311 GPA

Cited by 44 publications

References 11 publications

Low-temperature electrical resistivity of praseodymium at pressures up to 120 GPa

Low-temperature electrical resistivity of praseodymium at pressures up to 120 GPa

A high pressure distorted α-uranium (Pnma) structure in plutonium

Magnetic and structural phase transitions in erbium at low temperatures and high pressures

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