TO(Γ) mode resonances in the rare-earth nitrides

W. F. Holmes-Hewett; R. G. Buckley; T. J. Butler; C. Pot; K. Van Koughnet; B. J. Ruck; H. J. Trodahl

doi:10.1063/5.0098290

journal article·2022-07-01Open access

TO(Γ) mode resonances in the rare-earth nitrides

W. F. Holmes-Hewett, R. G. Buckley, T. J. Butler, C. Pot, K. Van Koughnet, B. J. Ruck, H. J. Trodahl

AIP Advances· Volume 12· Issue 7

Publisher page Open full text

Source abstract

Abstract

Far infrared measurements of the absorption into the IR-active TO(Γ) mode are reported for a selection of the rare-earth mononitrides. The frequencies harden as anticipated by ≈15% as the lattice constant shrinks by ≈6% from SmN to LuN, though they are typically ∼25% softer than the LSDA+U prediction published a decade ago. The data are in much closer agreement with our computation based on more recent software for two in the series: GdN and LuN. The resonances show surprisingly heavy damping, diminishing from the lighter to heavier rare earth elements.

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Research context

OpenAlex topics: Inorganic Chemistry and Materials · Rare-earth and actinide compounds · Luminescence Properties of Advanced Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

The MacDiarmid Institute for Advanced Materials and Nanotechnology and The School of Chemical and Physical Sciences, Victoria University of Wellington 1 , P.O. Box 600, Wellington 6140, New Zealand

The MacDiarmid Institute for Advanced Materials and Nanotechnology and The Robinson Research Institute, Victoria University of Wellington 2 , P.O. Box 600, Wellington 6140, New Zealand

The School of Chemical and Physical Sciences, Victoria University of Wellington 3 , P.O. Box 600, Wellington 6140, New Zealand

Funding

New Zealand Endeavor Fund

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