Fabrication of Polycrystalline Transparent Co+2: MgAl2O4 by a Combination of Spark Plasma Sintering (SPS) and Hot Isostatic Pressing (HIP) Processes

Maxim Sokol, Sergey Kalabukhov, Nahum Frage

Research output: Contribution to journalConference articlepeer-review

Abstract

Transparent Co2+ doped MgAl2Ob4 spinel was fabricated by SPS consolidation followed by and HIP treatment. It was established that HIP treatment significantly improved transparency of the ceramic in a wide range of wavelengths, especially, in a range, which is relevant for Q-switching. Nonlinear absorption was demonstrated and the ground and excited state absorption cross sections were estimated. The positive effect of the HIP treatment on the optical properties is related to an elimination of extremely fine porosity and to the location of Co ions at Mg2+sites in the spinel ionic structure. The experimental results indicate that the fabricated specimens can be used as a passive laser Q-switching material.

Original languageEnglish
Article number03002
JournalMATEC Web of Conferences
Volume109
DOIs
StatePublished - 31 May 2017
Externally publishedYes
Event2nd International Conference on Materials Science and Nanotechnology, ICMSNT 2017 and 2017 2nd International Symposium on Material Science and Technology, ISMST 2017 - Auckland, New Zealand
Duration: 19 Apr 201722 Apr 2017

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