首页|Site occupancy, luminescence and dielectric properties of β-Ca3(PO4)2-type Ca8ZnLn(PO4)7 host materials

Site occupancy, luminescence and dielectric properties of β-Ca3(PO4)2-type Ca8ZnLn(PO4)7 host materials

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  • NSTL
  • Elsevier
? 2022 Elsevier B.V.Phosphates of Ca8ZnLn(PO4)7 (Ln3+ = La – Nd, Sm – Lu) with β-Ca3(PO4)2-type structure were prepared by high-temperature solid-state technique on air. All compounds of Ca8ZnLn(PO4)7 are centrosymmetric and have R3ˉc space group, which has been proved by several methods such as second-harmonic generation, dielectric spectroscopy, and Rietveld analysis. The influence of Ln3+ on the structure, luminescent properties and temperature of phase transitions, which corresponds with “tetrad” effect, has been investigated. The bandgap width and location of 4f Ln3+ and Ln2+ levels relatively to the energy bands were determined using the data of luminescent spectroscopy.

4f levelsAntiferroelectric propertiesBandgap of β-Ca3(PO4)2Crystal structureDielectric propertiesLuminescence propertiesPhosphateSynchrotron radiation

Dikhtyar Y.Y.、Morozov V.A.、Deyneko D.V.、Baryshnikova O.V.、Nikiforov I.V.、Lazoryak B.I.、Spassky D.A.、Belik A.A.

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Lomonosov Moscow State University Chemistry Department

Lomonosov Moscow State University Skobeltsyn Institute of Nuclear Physics

International Center for Materials Nanoarchitectonics (WPI-MANA) National Institute for Materials Science (NIMS)

2022

10.1016/j.jallcom.2022.164521

Journal of Alloys and Compounds

Journal of Alloys and Compounds

EISCI
ISSN：0925-8388
年,卷(期)：2022.908
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