Nd 3 + -doped yttrium aluminum garnet crystal as a near-infrared pressure sensor for diamond anvil cells

Abstract

Pressure-induced shift of various luminescence lines of Nd3+-doped yttrium aluminum garnet crystal in the pressure range of 0–120kbars and temperatures between 10 and 300K is reported. Spectral positions of all these lines in the region of 900–960nm shift linearly towards lower energies with the pressure coefficient values from −0.01to−0.99cm−1∕kbar in the examined pressure range. Two of these lines have similar pressure coefficients than those of the R lines of Cr3+ in ruby. Therefore, they can be readily used for pressure calibration in diamond anvil cells.

Huge enhancement of Sm2+ emission via Eu2+ energy transfer in a SrB4O7 pressure sensor

“…Ce 3+ , Er 3+ , Tm 3+ , etc., and their use for pressure sensing applications. 25,26,[48][49][50][51][52][53] However, there are no reports concerning signal enhancement of pressure sensors via the ET processes from Eu 2+ to other Ln 2+/3+ ions, which may significantly increase the emission intensity of various co-doped optical sensors, working under high pressure conditions. Herein, we report a huge enhancement of about 60 times in the emission intensity of Sm 2+ caused by the Eu 2+ -Sm 2+ ET in the co-doped SrB 4 O 7 compound synthesized by a simple solid-state method in air, and its application as a well-calibrated and accurate optical pressure sensor, which can work simultaneously under extreme conditions of pressure and temperature.…”

Pressure-induced structural evolution and amorphization in Eu3Ga5O12

“…The PIA transition in the REE garnets is shown to be irreversible. Because REE garnets doped with different REE elements have fascinating optical luminescent properties, which could serve as laser materials and new optical pressure sensors, [9][10][11][12][13][14][15][16] understanding the structural evolution, thermodynamics, and driving mechanism of the crystalline-amorphous transformation is of great interest both from the fundamental and application points of view. However, few studies are focused on the structural change of the REE garnets to demonstrate the amorphization process in these systems.…”

Low Temperature Crystal Structure Behaviour of Complex Yttrium Aluminium Oxides YAlO_3 and Y_3Al_5O_{12}

“…Variously doped YAG materials have been proposed as optical pressure sensors up to very high pressure (ca. 180 GPa) [18].…”