Vibrational anisotropy of <i>δ</i>-(Al,Fe)OOH single crystals as probed by nuclear resonant inelastic X-ray scattering

Buchen, Johannes; Sturhahn, Wolfgang; Ishii, Takayuki; Jackson, Jennifer M.

doi:https://doi.org/10.5194/ejm-33-485-2021

Articles | Volume 33, issue 4

https://doi.org/10.5194/ejm-33-485-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Probing the Earth: experiments and mineral physics at mantle...

https://doi.org/10.5194/ejm-33-485-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 33, issue 4

Research article

|

17 Aug 2021

Research article |

| 17 Aug 2021

Vibrational anisotropy of δ-(Al,Fe)OOH single crystals as probed by nuclear resonant inelastic X-ray scattering

Johannes Buchen, Wolfgang Sturhahn, Takayuki Ishii, and Jennifer M. Jackson

Supplement

https://doi.org/10.5194/ejm-33-485-2021-supplement

Data sets

Single-crystal NRIXS of delta-(Al,Fe)OOH (Version 1.0) Johannes Buchen, Wolfgang Sturhahn, Takayuki Ishii, and Jennifer M. Jackson https://doi.org/10.22002/D1.2050

Short summary

We investigated the thermal vibrations of ⁵⁷Fe atoms in the crystal structure of a high-pressure form of the oxyhydroxide compound (Al,Fe)OOH. The results of our nuclear resonant inelastic X-ray scattering experiments on single crystals show that ⁵⁷Fe atoms vibrate at different frequencies and with different amplitudes when being displaced in different directions. This anisotropy of atomic vibrations is transmitted to related thermal properties and can be described using second-rank tensors.