TY - JOUR
T1 - Highly-doped Nd:YAG ceramics fabricated by conventional and high pressure SPS
AU - Wagner, Avital
AU - Ratzker, Barak
AU - Kalabukhov, Sergey
AU - Kolusheva, Sofiya
AU - Sokol, Maxim
AU - Frage, Nachum
N1 - Publisher Copyright:
© 2019 Elsevier Ltd and Techna Group S.r.l.
PY - 2019/6/15
Y1 - 2019/6/15
N2 - Spark plasma sintering (SPS) is an effective process for the fabrication of highly transparent oxide ceramics for photonic applications. In the present study, Nd-doped yttrium aluminum garnet (Nd:YAG) ceramics with various dopant concentrations (0.5–5 at.%) were fabricated at 1300–1400 °C using conventional SPS (60 MPa) and high pressure (300 MPa) conditions. The appearance, X-ray diffraction pattern, densification regime, microstructure, mechanical and optical properties were compared; the dependency on Nd concentration and sintering pressure is discussed. The pressure applied during the sintering process seemed to have only a minor effect on the luminescent properties, while the mechanical properties were superior for the samples sintered under high pressure conditions. The known concentration quenching phenomenon was observed and an equation for estimation of the Nd concentration, based on phosphorescence lifetime, is suggested.
AB - Spark plasma sintering (SPS) is an effective process for the fabrication of highly transparent oxide ceramics for photonic applications. In the present study, Nd-doped yttrium aluminum garnet (Nd:YAG) ceramics with various dopant concentrations (0.5–5 at.%) were fabricated at 1300–1400 °C using conventional SPS (60 MPa) and high pressure (300 MPa) conditions. The appearance, X-ray diffraction pattern, densification regime, microstructure, mechanical and optical properties were compared; the dependency on Nd concentration and sintering pressure is discussed. The pressure applied during the sintering process seemed to have only a minor effect on the luminescent properties, while the mechanical properties were superior for the samples sintered under high pressure conditions. The known concentration quenching phenomenon was observed and an equation for estimation of the Nd concentration, based on phosphorescence lifetime, is suggested.
KW - Nd:YAG
KW - Optical properties
KW - Spark plasma sintering
UR - http://www.scopus.com/inward/record.url?scp=85063235535&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2019.03.141
DO - 10.1016/j.ceramint.2019.03.141
M3 - מאמר
AN - SCOPUS:85063235535
VL - 45
SP - 12279
EP - 12284
JO - Ceramics International
JF - Ceramics International
SN - 0272-8842
IS - 9
ER -