Phase equilibria in the YPO4–Rb3PO4 system

A phase diagram of the Rb 3 Y(PO 4 ) 2 -BaRbPO 4 system for the whole range of compositions, up to a temperature of 1700°C, has been developed on the basis of the results of thermal and XRD analyses and microscopic examinations. The investigated system has an eutectic character. Limited solid solutions with the high-temperature (a) and low-temperature (b) structure of BaRbPO 4 form in this system. The maximum solubility of Rb 3 Y(PO 4 ) 2 in the high-temperature solid solution (a ss ) occurs at the eutectic temperature (1275°C), amounting to~80 mass % Rb 3 Y(PO 4 ) 2 . At 988°C, the a ss decomposes according to eutectoidal reaction: a ss ↔ b s + Rb 3 Y(PO 4 ) 2 . The maximum content of Rb 3 Y(PO 4 ) 2 in the low-temperature limited solid solution (b ss ) does not exceed 10 mass% Rb 3 Y(PO 4 ) 2 . The a ss phase has a hexagonal glaserite-like structure with the unit cell parameters a % 5.7 and b % 8.1 A.

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“…, a = 5.66754(3), c = 8.07782(4) Å (S.G.

P \bar{3} m 1

). The compound melts congruently at ~1255°C or at 1304°C . It was shown in Ref.…”

Section: Introductionmentioning

confidence: 65%

New Solid Solutions and Phase Equilibria in the Rb₃Y(PO₄)₂–BaRbPO₄ System

2016

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“…The XRD patterns of Y 1 À x (PO 3 ) 3 :xEu 3 + (0o xr 0.25) and JCPDF card no. 42-0501. and La(PO 3 ) 3 :Eu 3+ ,Tb 3+ [6][7][8][9] which have the similar structural characteristics to Y(PO 3 ) 3 , such as the big Ln-Ln distance and the isolated Ln 3+ ions [15,16]. This structural characteristics make the energy not to be easily relaxed by the migrating among the Ln 3+ ions, so that Ln(PO 3 ) 3 (Ln¼Y, La) has a high quenching concentration.…”

Section: Resultsmentioning

confidence: 99%

Photoluminescence properties of Eu3+ in Y(PO3)3 under VUV excitation

Wang

Shi

2011

Journal of Luminescence

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“…Phase diagrams of phosphate systems with rare earth elements have been studied by our group in last decades [34][35][36][37][38][39]. In the Ca 3 (PO 4 ) 2 -REPO 4 systems (RE = Y, La, Ce) form compounds with the formula Ca 3 RE(PO 4 ) 3 [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

The revised phase diagram of the Ca3(PO4)2–YPO4 system. The temperature and concentration range of solid-solution phase fields

Matraszek

Radomińska

2014

J Therm Anal Calorim

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A revised version of the Ca 3 (PO 4 ) 2 -YPO 4 phase diagram has been proposed on the basis of results obtained by thermal analysis (DTA/DSC/TG) and X-ray diffraction methods. A limited solid solution with the structure of b-Ca 3 (PO 4 ) 2 exists in the system. At 1,100°C the maximal concentration of YPO 4 in the solid solution is *15 mass%. The solid-solution phase field exists in the temperature range upto *1,380°C. Two high-temperature solid solutions with the structure of a 0 and a-Ca 3 (PO 4 ) 2 form in system as well, however only the a phase can be obtained by quenching from high temperatures. The Ca 3 Y(PO 4 ) 3 compound with the structure of eulytite forms in the Ca 3 (PO 4 ) 2 -YPO 4 system at temperatures exceeding 1,255°C and does not show any polymorphic transition.

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Phase equilibria in the YPO4–Rb3PO4 system

Abstract: The phase equilibria occurring in the YPO 4 -Rb 3 PO 4 system were investigated by thermoanalytical methods, X-ray powder diffraction, and ICP-OES.

Cited by 10 publications

References 26 publications

New Solid Solutions and Phase Equilibria in the Rb₃Y(PO₄)₂–BaRbPO₄ System

New Solid Solutions and Phase Equilibria in the Rb₃Y(PO₄)₂–BaRbPO₄ System

Photoluminescence properties of Eu3+ in Y(PO3)3 under VUV excitation

The revised phase diagram of the Ca3(PO4)2–YPO4 system. The temperature and concentration range of solid-solution phase fields

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Phase equilibria in the YPO4–Rb3PO4 system

Abstract: The phase equilibria occurring in the YPO 4 -Rb 3 PO 4 system were investigated by thermoanalytical methods, X-ray powder diffraction, and ICP-OES.

Cited by 10 publications

References 26 publications

New Solid Solutions and Phase Equilibria in the Rb3Y(PO4)2–BaRbPO4 System

New Solid Solutions and Phase Equilibria in the Rb3Y(PO4)2–BaRbPO4 System

Photoluminescence properties of Eu3+ in Y(PO3)3 under VUV excitation

The revised phase diagram of the Ca3(PO4)2–YPO4 system. The temperature and concentration range of solid-solution phase fields

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Product

Resources

About

New Solid Solutions and Phase Equilibria in the Rb₃Y(PO₄)₂–BaRbPO₄ System

New Solid Solutions and Phase Equilibria in the Rb₃Y(PO₄)₂–BaRbPO₄ System