@article{10902/20889,
year = {2020},
url = {http://hdl.handle.net/10902/20889},
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.},
organization = {Financial support from Projects MAT2015-69508-P; PGC2018-101464-B-I00 and MALTA -Consolider Team RED2018-102612-T (Ministerio de Ciencia, Innovación y Universidades) is acknowledged.},
publisher = {Taylor & Francis},
publisher = {High Pressure Research, 40:1, 107-118 (2020)},
title = {Exploiting optical properties of nanopolycrystalline diamond in high pressure experiments},
author = {Barreda Argüeso, José Antonio and González Gómez, Jesús Antonio and Valiente Barroso, Rafael and Irifune, Tetsuo and Rodríguez González, Fernando},
}