Abstract
The atomic volume of rare earth metal dysprosium (Dy) has been measured up to high pressures of 35 GPa and low temperatures between 200 and 7 K in a diamond anvil cell using angle dispersive X-ray ...
Highlights
With one of the highest intrinsic magnetic moments (10.6 Bohr Magnetron) among the heavy rare earth elements, dysprosium (Dy) exhibits a rich magnetic phase diagram under high-pressure and low-temperature conditions
The crystallographic sequence hcp → α-Sm → dhcp → fcc – distorted fcc is observed with increasing pressure or decreasing atomic number in all lanthanide metals and is explained on the basis of number of d-electrons facilitated by electron transfer from the s-conduction band to the d-conduction band under high pressures (Duthie & Pettifor, 1977; Johansson & Rosengren, 1975)
The magnetic ordering transitions in heavy lanthanides have been studied by magnetic susceptibility measurements in a diamond anvil cell up to modest pressure of 10–20 GPa and a systematic decrease in magnetic ordering temperature with increasing pressure has been documented (Jackson, Malba, Weir, Baker, & Vohra, 2005)
Summary
With one of the highest intrinsic magnetic moments (10.6 Bohr Magnetron) among the heavy rare earth elements, dysprosium (Dy) exhibits a rich magnetic phase diagram under high-pressure and low-temperature conditions. The high-pressure structural and magnetic phase transition study on rare earth metal dysprosium at high pressures and low temperatures is carried out by Yogesh Vohra’s research group at the University of Alabama at Birmingham (UAB) and is supported by the US Department of Energy – National Nuclear Security Administration.
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