Structural and optical properties of GdAlO3:Tb3+ crystal obtained by optical floating zone method

Zhang, Pengpeng; Gao, Mingyuan; Guo, Rui; Xu, Jingyi; Wang, Yu; Li, Luo

doi:10.1016/j.ijleo.2021.166880

Cited by 5 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Phosphors based on GdAlO3 (GAO) host have mainly been produced for photo-luminescent and neutron rod control applications due to numerous useful properties such as thermal and chemical stabilities, low cut-of phonon energy, high fusion point, and low thermal expansion [5,6]. Nonetheless, the TL properties of the phosphors relied on the GAO host have only been reported by a few previous studies, including two published by our research team, which focused on the characterization of powders synthesized by the reverse coprecipitation method.…”

Section: Introductionmentioning

confidence: 99%

Influence of the synthesis pathway upon the thermoluminescent response of gadolinium aluminate matrix phosphors

Alonso Sotolongo,

Montalvo,

Zárate Medina

2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The phosphors endowed with a glow curve have a peak much more intense than the others, sensitization to low doses, and a linear relationship between the thermoluminescent response and the dose, which are in demand in the dosimetry market. The gadolinium aluminate has been successfully used as a host lattice of phosphors with luminescent properties. Principally, the luminescent response of the said matrix has been improved by doping with rare earth ions. The thermoluminescent signal depends on the synthesis route because the defect density of a crystal is closely connected to the production pathway that the material went through. Therefore, a crucial step in sensitizing a phosphor is selecting a synthesis route that enhances the efficiency of its thermoluminescent mechanisms. The research herein focused on synthesizing phosphors composed of gadolinium aluminate with no dopant and doped with two molar percent of dysprosium, using two different routes. Among the two synthesis pathways, it was determined to be the most suitable for enhancing the thermoluminescent response of the aforementioned phosphors. The methods employed were reverse coprecipitation and the modified citrate precursor. The phosphors obtained by the reverse coprecipitation method showed the most sensitive thermoluminescent signal. Mainly, the phosphor activated with the dysprosium ion produced the most intense signal, suggesting an improvement in the thermoluminescent mechanisms due to the dopant insertion.

show abstract

Section: Introductionmentioning

confidence: 99%

Influence of the synthesis pathway upon the thermoluminescent response of gadolinium aluminate matrix phosphors

Alonso Sotolongo,

Montalvo,

Zárate Medina

2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…[ 1 , 2 , 3 ] Sought‐after properties often consist of high‐atomic number (Z) materials with high light yield and fast decay times, as well as high energy resolution. [ 1 , 4 , 5 , 6 ] Rare‐earth (RE) aluminum oxide perovskites doped with Ce 3+ and similar dopants such as Eu 3+[ 7 ] and Tb 3+[ 8 , 9 ] have shown promise as scintillating and phosphorescent materials throughout the past 20+ years. [ 1 , 2 , 10 , 11 , 12 ] For instance, Ce‐doped LuAlO 3 (Ce:LuAlO 3 ) has a relatively high Z value and has been considered for positron emission tomography due to the high stopping power required for γ‐ray detection.…”

Section: Introductionmentioning

confidence: 99%

Structural and Optical Properties of High Entropy (La,Lu,Y,Gd,Ce)AlO₃ Perovskite Thin Films

Corey

Zhang

et al. 2022

Advanced Science

View full text Add to dashboard Cite

Mixtures of Ce-doped rare-earth aluminum perovskites are drawing a significant amount of attention as potential scintillating devices. However, the synthesis of complex perovskite systems leads to many challenges. Designing the A-site cations with an equiatomic ratio allows for the stabilization of a single-crystal phase driven by an entropic regime. This work describes the synthesis of a highly epitaxial thin film of configurationally disordered rare-earth aluminum perovskite oxide (La 0.2 Lu 0.2 Y 0.2 Gd 0.2 Ce 0.2 )AlO 3 and characterizes the structural and optical properties. The thin films exhibit three equivalent epitaxial domains having an orthorhombic structure resulting from monoclinic distortion of the perovskite cubic cell. An excitation of 286.5 nm from Gd 3+ and energy transfer to Ce 3+ with 405 nm emission are observed, which represents the potential for high-energy conversion. These experimental results also offer the pathway to tunable optical properties of high-entropy rare-earth epitaxial perovskite films for a range of applications.

show abstract

Thermoluminescence analysis of beta particle irradiated Gd1-xEuxAlO3 phosphors

Sotolongo

Montalvo

Altamirano

et al. 2022

Applied Radiation and Isotopes

View full text Add to dashboard Cite

Structural and optical properties of GdAlO3:Tb3+ crystal obtained by optical floating zone method

Cited by 5 publications

References 32 publications

Influence of the synthesis pathway upon the thermoluminescent response of gadolinium aluminate matrix phosphors

Influence of the synthesis pathway upon the thermoluminescent response of gadolinium aluminate matrix phosphors

Structural and Optical Properties of High Entropy (La,Lu,Y,Gd,Ce)AlO₃ Perovskite Thin Films

Thermoluminescence analysis of beta particle irradiated Gd1-xEuxAlO3 phosphors

Contact Info

Product

Resources

About

Structural and optical properties of GdAlO3:Tb3+ crystal obtained by optical floating zone method

Cited by 5 publications

References 32 publications

Influence of the synthesis pathway upon the thermoluminescent response of gadolinium aluminate matrix phosphors

Influence of the synthesis pathway upon the thermoluminescent response of gadolinium aluminate matrix phosphors

Structural and Optical Properties of High Entropy (La,Lu,Y,Gd,Ce)AlO3 Perovskite Thin Films

Thermoluminescence analysis of beta particle irradiated Gd1-xEuxAlO3 phosphors

Contact Info

Product

Resources

About

Structural and Optical Properties of High Entropy (La,Lu,Y,Gd,Ce)AlO₃ Perovskite Thin Films