Abstract
A2B2O7 system compounds, which usually present three phase structures mainly based on the ionic radius ratios of rA and rB (rA/rB), have been studied for potential applications in many fields, such as thermal barrier coatings, luminescence powders, fast-ion conductors, photocatalysts, and matrices for immobilization of highly active radionuclides. Since 2005, La2Hf2O7 was fabricated into transparent ceramics and much more attentions were paid on A2B2O7 transparent ceramics for new applications. In this review, the development of A2B2O7 system transparent ceramics was described. The structure characteristics, powder synthesis method, and sintering techniques of the final A2B2O7 transparent ceramics were summarized. After that, the mostly reported A2Hf2O7, A2Zr2O7, and A2Ti2O7 system transparent ceramics were systematically introduced. The potential application fields and future development trends were also discussed, focusing on scintillators, optical elements, and other luminescent materials
Highlights
Since the 1950s, the first translucent Al2O3 was reported [1], and many transparent ceramics were developed, including oxide/non-oxide transparent ceramics, such as MgO [2], Y2O3 [3], CaO [4], BeO [5], ZrO2 [6], MgAl2O4 [7], LiAl5O8 [8], Gd2O3 [9], Lu2O3 [10,11], Y3Al5O12 [12,13], PLZT (Pb1–xLax(ZryTiz)O3) [14], (Y,Gd)2O3:Eu [15,16], Gd2O2S:Pr [17,18], Gd3Ga5O12: Cr,Ce [19], and CaF2 [20], MgF2 [21], SrF2 [22], BaF2 [23], AlN [24], AlON [25,26], SiAlON [27], ZnS [28], ZnSe [29], CdTe [30], etc
A2B2O7 system materials have been studied as early as in the 1960s [31], but they were used as thermal barrier coatings [32], luminescence powders [33,34], fast-ion conductors [35,36], photocatalysts [37], matrices for immobilization of highly active radionuclides [38–40], and so on, while the study on A2B2O7 system transparent ceramics was kicked off in the 2000s
The progress of powder synthesis of A2B2O7 system transparent ceramics is summarized in this part
Summary
Since the 1950s, the first translucent Al2O3 was reported [1], and many transparent ceramics were developed, including oxide/non-oxide transparent ceramics, such as MgO [2], Y2O3 [3], CaO [4], BeO [5], ZrO2 [6], MgAl2O4 [7], LiAl5O8 [8], Gd2O3 [9], Lu2O3 [10,11], Y3Al5O12 [12,13], PLZT (Pb1–xLax(ZryTiz)O3) [14], (Y,Gd)2O3:Eu [15,16], Gd2O2S:Pr [17,18], Gd3Ga5O12: Cr,Ce [19], and CaF2 [20], MgF2 [21], SrF2 [22], BaF2 [23], AlN [24], AlON [25,26], SiAlON [27], ZnS [28],. A2B2O7 system materials have been studied as early as in the 1960s [31], but they were used as thermal barrier coatings [32], luminescence powders [33,34], fast-ion conductors [35,36], photocatalysts [37], matrices for immobilization of highly active radionuclides [38–40], and so on, while the study on A2B2O7 system transparent ceramics was kicked off in the 2000s. Their mainly potential applications are scintillator hosts as most of www.springer.com/journal/40145. Rare earth ion doped A2B2O7 system transparent ceramics [42,51– 54] were fabricated to study their luminescent properties.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
