Sintering and of ZnS by Hot Pressing (HP) and Spark Plasma Sintering (SPS) and Optical Properties of Sintened Materical

Hong, Younwoo; Kim, You-Bi; Lee, Young Jin; Kim, Seiki; Paik, Jong Hoo; Ho, Kim Jin

doi:10.3365/kjmm.2015.53.12.883

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“…Later, the size of ceramic grains can be controlled by increasing the pressure or using other sintering methods to reduce the influence of grain size. [34][35][36] Figure 8 shows the chemical composition and elemental mappings of the 1 at.% Nd: S-FAP transparent ceramics by EDX spectrum. It confirmed that Nd 3+ , Sr 2+ , P 5+ , and Fwere present (O 2always binds with P 5+ to form P-O tetrahedron) in the sample as designed and all the elements are homogeneous corresponding to the fracture face of the S-FAP ceramics.…”

Section: Resultsmentioning

confidence: 99%

The effect of Nd³⁺ concentration on fabrication, microstructure, and luminescent properties of anisotropic S‐FAP ceramics

Zhang

Zhou

et al. 2021

J Am Ceram Soc.

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Nd 3+ doped strontium fluorophosphate (S-FAP), with chemical formula Sr 5 (PO 4 ) 3 F, nanopowders were prepared using the co-precipitation method. The prepared powders had no impurity phase with a grain size of about 30 nm and the doping limit of Nd 3+ ions in strontium fluorophosphate is about 9 at.%. The morphology and particle size were determined by the doping concentration of Nd 3+ . Anisotropic Nd: S-FAP transparent ceramics with different Nd 3+ doping concentrations were fabricated successfully by the simple hot-pressing method. The grain size of prepared S-FAP transparent ceramics decreased first and then increased with the increase of Nd 3+ concentration. The 2 at.% Nd: S-FAP ceramic presented the highest optical transmittance at all wavelengths range. The characteristic transitions from the ground state to the excited states of Nd 3+ ions were observed from the absorption spectra, and the absorption cross-section was calculated at 3.71 × 10 -20 cm 2 . The influence of Nd 3+ ion concentration on luminescence intensity and fluorescence lifetime was studied under 796 nm excitation. The strong emission of 4 F 3/2 → 4 I 9/2 transition in Nd: S-FAP was calculated by Judd-Ofelt (J-O) theory.

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Section: Resultsmentioning

confidence: 99%

The effect of Nd³⁺ concentration on fabrication, microstructure, and luminescent properties of anisotropic S‐FAP ceramics

Zhang

Zhou

et al. 2021

J Am Ceram Soc.

View full text Add to dashboard Cite

show abstract

Sintering and of ZnS by Hot Pressing (HP) and Spark Plasma Sintering (SPS) and Optical Properties of Sintened Materical

Cited by 1 publication

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The effect of Nd³⁺ concentration on fabrication, microstructure, and luminescent properties of anisotropic S‐FAP ceramics

The effect of Nd³⁺ concentration on fabrication, microstructure, and luminescent properties of anisotropic S‐FAP ceramics

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Sintering and of ZnS by Hot Pressing (HP) and Spark Plasma Sintering (SPS) and Optical Properties of Sintened Materical

Cited by 1 publication

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The effect of Nd3+ concentration on fabrication, microstructure, and luminescent properties of anisotropic S‐FAP ceramics

The effect of Nd3+ concentration on fabrication, microstructure, and luminescent properties of anisotropic S‐FAP ceramics

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The effect of Nd³⁺ concentration on fabrication, microstructure, and luminescent properties of anisotropic S‐FAP ceramics

The effect of Nd³⁺ concentration on fabrication, microstructure, and luminescent properties of anisotropic S‐FAP ceramics