TY - JOUR

T1 - Synthesis, crystal structure, photoluminescence of Ba3Y2(BO3)4:Er3+ and thermal expansion of Ba3Y2(BO3)4

AU - Демина, Софья Владимировна

AU - Шаблинский, Андрей Павлович

AU - Поволоцкий, Алексей Валерьевич

AU - Бубнова, Римма Сергеевна

AU - Бирюков, Я.П.

AU - Фирсова, Вера

AU - Филатов, Станислав Константинович

PY - 2023/2/1

Y1 - 2023/2/1

N2 - The Ba3Y2–xErx(BO3)4 (х = 0.01, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3) phosphors were obtained by crystallization from amelt. The Ba3Y2(BO3)4 crystal structure was refined from single crystal X-ray diffraction data to R = 0.037. Itsanisotropic atomic displacement parameters for all atoms were refined for the first time. The borate crystallizesin the orthorhombic crystal system, space group Pnma with unit cell parameters a = 7.673(1), b = 16.44(1), c =8.977(2) Å, V = 1132.3(3) Å3, Z = 4. These phosphors are isotypical to those of the A3M2(BO3)4 (A = Ca, Sr, Ba,M = Ln, Y, Bi) family. The crystal structure contains the isolated BO3 triangles, two general and a special oneindependent crystallographic sites for large cations, which are disordered over sites. Thermal behavior ofBa3Y2(BO3)4 was investigated by high-temperature X-ray powder diffraction and thermal expansion coefficientsare calculated in a wide temperature range. An inflections of temperature dependencies of the unit cell parametersis observed in a range 600–740 ◦C. Luminescence spectra, excitation and kinetic curves of theBa3Y2(BO3)4:Er3+ series are reported. A maximum luminescence intensity is observed for the x = 0.1 sample.According to vibrational spectroscopy data no structural changes upon activation of the Ba3Y2(BO3)4 matrix withthe Er ions are observed.

AB - The Ba3Y2–xErx(BO3)4 (х = 0.01, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3) phosphors were obtained by crystallization from amelt. The Ba3Y2(BO3)4 crystal structure was refined from single crystal X-ray diffraction data to R = 0.037. Itsanisotropic atomic displacement parameters for all atoms were refined for the first time. The borate crystallizesin the orthorhombic crystal system, space group Pnma with unit cell parameters a = 7.673(1), b = 16.44(1), c =8.977(2) Å, V = 1132.3(3) Å3, Z = 4. These phosphors are isotypical to those of the A3M2(BO3)4 (A = Ca, Sr, Ba,M = Ln, Y, Bi) family. The crystal structure contains the isolated BO3 triangles, two general and a special oneindependent crystallographic sites for large cations, which are disordered over sites. Thermal behavior ofBa3Y2(BO3)4 was investigated by high-temperature X-ray powder diffraction and thermal expansion coefficientsare calculated in a wide temperature range. An inflections of temperature dependencies of the unit cell parametersis observed in a range 600–740 ◦C. Luminescence spectra, excitation and kinetic curves of theBa3Y2(BO3)4:Er3+ series are reported. A maximum luminescence intensity is observed for the x = 0.1 sample.According to vibrational spectroscopy data no structural changes upon activation of the Ba3Y2(BO3)4 matrix withthe Er ions are observed.

KW - Optical properties

KW - Spectroscopy

KW - Thermal expansion

KW - X-ray methods

UR - https://www.mendeley.com/catalogue/01ed776b-3a7a-3ed2-af16-23ef64dc74b6/

U2 - 10.1016/j.ceramint.2022.10.184

DO - 10.1016/j.ceramint.2022.10.184

M3 - Article

VL - 49

SP - 6459

EP - 6469

JO - Ceramics International

JF - Ceramics International

SN - 0272-8842

IS - 4

ER -