Stabilization of novel high temperature phase yellow-emitting σ-type (Ba1−x−yEuxMgy)2P2O7 phosphors using a melt synthesis technique

Nakagawa, Hiroko; Kim, S. W.; Hasegawa, Tetsuya; Hasegawa, S.; Ishigaki, Tadashi; Uematsu, Kazuyoshi; Toda, Kenji; Takaba, Hiromitsu; Sato, Mineo

doi:10.1039/c7qi00359e

Cited by 7 publications

(2 citation statements)

References 23 publications

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“…[54]. Ba 2 P 2 O 7 has two different crystal structure types: α-type, a lowtemperature phase (Orthorhombic: P nma ), and σ-type: a high-temperature phase (hexagonal: P-6 2m ) [55]. Adding BaZrO 3 and Ba 2 P 2 O 7 as a filler enhances the radiation shielding property of the Polipol 314-filled polyester resin used in nuclear medicine [56].…”

Section: Resultsmentioning

confidence: 99%

Evaluation of the Potential of Barium Zirconate on the Sinterability and Properties of Bovine Hydroxyapatite

Pazarlıoğlu¹

2023

Ceramics - Silikaty

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In the present study, the potential of barium zirconate (BaZrO 3 ; 1-5 wt. %) on the sinterability, and properties of bovine hydroxyapatite (BHA) was evaluated. BHA decomposed into beta and alpha-tricalcium phosphate (β and α-TCP) at a 4.7 % rate. Tetracalcium phosphate (TTCP) was detected as the decomposition phase in the BaZrO 3 added BHAs, and it increased up to 10.7 % with an increasing BaZrO 3 ratio. In addition to TTCP, the phases of BaZrO 3 , Ba 2 ZrO 4 , σ-Ba 2 P 2 O 7 , Ba 3 P 2 O 8 and CaZrO 3 were detected in the composites. The addition of BaZrO 3 at an amount of 3 wt. % has a higher potential than the others to improve the sinterability and properties of BHA. It contributed to the increase in the fracture toughness from 0.99 ± 0.13 to 1.80 ± 0.12 MPa•m 1/2 and the compressive strength from 115. 75 ± 4.27 to 173.66 ± 13.61 MPa, and the decrease in the brittleness index from 4.24 ± 0.31 to 2.45 ± 0.15 µ -1/2 . The in-vitro bioactivity of BHA also increases with the additional BaZrO 3 . However; it is recommended to be used in applications that do not require load bearing in the human body due to its insufficient fracture toughness.

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Section: Resultsmentioning

confidence: 99%

Evaluation of the Potential of Barium Zirconate on the Sinterability and Properties of Bovine Hydroxyapatite

Pazarlıoğlu¹

2023

Ceramics - Silikaty

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“…[16] In the literature, Eu 2+ -doped Ba 2 P 2 O 7 phosphate and Ba 2 P 2 O 7 :Tb 3+ , Eu 3+ phosphate were studied by many authors and the crystal structural, photoluminescence properties and mechanisms of these phosphor were reported. [17,18] To the best of our knowledge, the luminescence property and mechanism of BPO:Ce 3+ /Tb 3+ phosphor has been rarely reported yet. However, in the present work, the Tb 3+ co-activated BPO phosphor is prepared by the co-precipitation of the emitting colortunable Ce 3+ , and its properties are also investigated.…”

Section: Introductionmentioning

confidence: 99%

Energy transfer, luminescence properties, and thermal stability of color tunable barium pyrophosphate phosphors*

Li¹,

Ji²,

Luo³

et al. 2020

Chinese Phys. B

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A series of barium pyrophosphate Ba2P2O7 (BPO) phosphors doped with Ce3+ or Tb3+ ions is synthesized via a co-precipitation method under reducing atmosphere. The phase structures, photoluminescence (PL) properties, and thermal stabilities of the samples are characterized by using powder x-ray diffraction (PXRD) and PL spectra. The emission colors of samples can be tuned from blue (0.1544, 0.0310) to green (0.2302, 0.4229) by changing the doping concentrations of Tb3+ under ultraviolet excitation. The energy transfer mechanism between Ce3+ and Tb3+ in the BPO is dipole–dipole interaction with a critical distance of 25.86 Å and an energy transfer efficiency of about 85%, which are determined through the PL spectrum and the decay curve. Moreover, the Ce3+/Tb3+ co-doped sample has good thermal stability for temperature quenching, and the emission intensity at 423 K is maintained at 95% measured at 298 K. The above results show that the BPO:Ce3+, Tb3+ can serve as a promising candidate of green emitting phosphor for solid-state lighting.

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Blue-light-pumped wide-band red emission in a new Ce3+-activated oxide phosphor, BaCa2Y6O12:Ce3+: Melt synthesis and photoluminescence study based on crystallographic analyses

Hasegawa

Iwaki

Kim

et al. 2019

Journal of Alloys and Compounds

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Stabilization of novel high temperature phase yellow-emitting σ-type (Ba_1−x−yEu_xMg_y)₂P₂O₇ phosphors using a melt synthesis technique

Abstract: Novel high-temperature phase σ-type (Ba1−x−yEuxMgy)2P2O7 phosphors were synthesized for the first time by a melt synthesis technique using an arc-imaging furnace.

Cited by 7 publications

References 23 publications

Evaluation of the Potential of Barium Zirconate on the Sinterability and Properties of Bovine Hydroxyapatite

Evaluation of the Potential of Barium Zirconate on the Sinterability and Properties of Bovine Hydroxyapatite

Energy transfer, luminescence properties, and thermal stability of color tunable barium pyrophosphate phosphors*

Blue-light-pumped wide-band red emission in a new Ce3+-activated oxide phosphor, BaCa2Y6O12:Ce3+: Melt synthesis and photoluminescence study based on crystallographic analyses

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