Exploiting optical properties of nanopolycrystalline diamond in high pressure experiments

Barreda Argüeso, José Antonio; González Gómez, Jesús Antonio; Valiente Barroso, Rafael; Irifune, Tetsuo; Rodríguez González, Fernando

doi:10.1080/08957959.2019.1702173

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Identificadores

URI: http://hdl.handle.net/10902/20889

DOI: 10.1080/08957959.2019.1702173

ISSN: 0895-7959

ISSN: 1026-7522

Fecha

2020

Derechos

© Taylor & Francis. This is an Accepted Manuscript of an article published by Taylor & Francis in High Pressure Research on 2019, available online: http://www.tandfonline.com/, https://doi.org/10.1080/08957959.2019.1702173

Publicado en

High Pressure Research, 40:1, 107-118 (2020)

Editorial

Taylor & Francis

Enlace a la publicación

https://doi.org/10.1080/08957959.2019.1702173

Palabras clave

Raman spectroscopy

Luminescence

Pressure gauge

Pressure sensitivity

Nanopolycrystalline diamond

Resumen/Abstract

We investigated the optical properties (absorption, luminescence and Raman spectra) of nanopolycrystalline diamond (NPD) aiming at exploring its capabilities as a pressure sensor and as a pressure-cell anvil for combined X-ray/neutron and optical studies. Notably, we analysed the Raman peak shift and broadening with pressure using a Moissanite Anvil Cell (MAC). The results are compared with those obtained in a DAC, where Raman signals from NPD chips and diamond anvils strongly overlap. Its pressure behaviour in the hydrostatic and non-hydrostatic regimes were investigated. We showed that the nanopolycrystalline structure induces remarkable differences in the peak shift and broadening between NPD and natural type IIa single-crystal diamond, making NPD suitable as pressure gauge for pressure determination and testing hydrostaticity of pressure transmitting medium.