Ba3Tb(PO4)3: Crystal growth, structure, magnetic and magneto-optical properties

Chen, Xin; Gong, Zhong‐Liang; Wan, Qiping; Wu, Shuting; Guo, Fei; Zhuang, Naifeng; Chen, Jianzhong

doi:10.1016/j.optmat.2015.02.029

Cited by 19 publications

(9 citation statements)

References 34 publications

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“…Thus, the spectral and luminescent characteristics of Eu 3+ ions in Ba 3 Tb(PO 4 ) 3 differ from those in the phosphates (Ba,Sr) 3 Ln(PO 4 ) 3 , where Ln = La 3+ , Eu 3+ , or Lu 3+ [8][9][10], which are characterized by structural disordering. This agrees with the conclusion, made by the authors [11] on the basis of detailed X-ray structural investigations of single crystals, that the positions of Ba 2+ and Tb 3+ in Ba 3 Tb(PO 4 ) 3 are nonequivalent. In view of the formal charges and the ionic radii of Ba 2+ (1.47 Å), Tb 3+ (1.095 Å), and Eu 3+ (1.08 Å) the Tb positions are preferred for the Eu 3+ ions.…”

Section: Resultssupporting

confidence: 92%

Structure and Luminescent Characteristics of Ba3Tb(PO4)3 Doped with Eu3+ Ions

et al. 2015

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Tb, Ba). From study of the excitation spectra and the kinetics of luminescence quenching it was concluded that energy is transferred effectively from the Tb 3+ to the Eu 3+ during excitation in the UV and visible regions of the spectrum. Key words: mixed barium-terbium phosphate, Eu 3+ ions, eulitine, luminescent material. In recent years mixed phosphates with the composition M 3 II Ln(PO 4 ) 3 , with M II = Sr 2+ , Ba 2+ and Ln = Y 3+ , Cd 3+ , Tb 3+ , which crystallize in structures of the eulitine type (Bi 4 Si 3 O 12 ), have attracted increased attention on account of their use as the basis of luminophores for white light-emitting diodes [1-4] and plasma display panels [5]. Interest in the material with the composition Ba 3 Tb(PO 4 ) 3 : Eu 3+ arose from the possibility of increasing the luminescence intensity of the Eu 3+ as a result of the sensitizing effect of the Tb 3+ ions [6]. It was shown that the luminescence intensity of the Eu 3+ ions in Ba 3 Tb(PO 4 ) 3 during excitation in the ultraviolet region under vacuum is substantially higher than in Ba 3 Gd(PO 4 ) 3 . In the authors' opinion this is due to more effective energy transfer from Tb 3+ to Eu 3+ than from Gd 3+ to Eu 3+ . It should be noted that in [6] the luminescent characteristics of Eu 3+ in Ba 3 Tb(PO 4 ) 3 were only studied during excitation of luminescence in the vacuum ultraviolet region, which does not make it possible to reach a conclusion about the amount and the microstructure of the Eu 3+ luminescent centers. It is, however, known that compounds with structures of the eulitine type are characterized both by cationic [7] and by anionic (oxygen) disorder. The significant nonuniform broadening of the luminescence bands of the Eu 3+ , Eu 2+ , and Ce 3+ ions in the series of phosphates with the (Ba,Sr) 3 Ln(PO 4 ) 3 composition, where Ln = La 3+ , Eu 3+ , and Lu 3+ , have been linked to these crystal-chemical characteristics [8-10]. On the basis of the similarity in the luminescence spectra of Ce 3+ in a series of compounds with structures of the eulitine type the authors [10] came to the conclusion that the Ce 3+ ions in such structurally ordered systems can even form their own oxygen environment. The authors of [11] undertook a detailed X-ray structural investigation of Ba 3 Tb(PO 4 ) 3 single crystals grown by spontaneous crystallization and by the Czochralski method. It was shown that the Ba and Tb atoms in the Ba 3 Tb(PO 4 ) 3 structure occupy octahedral positions (16c) with distinctly different M-O 0040-5760/15/5103-0191

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Section: Resultssupporting

confidence: 92%

Structure and Luminescent Characteristics of Ba3Tb(PO4)3 Doped with Eu3+ Ions

et al. 2015

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“…8, the susceptibility of ZPSN glasses varies with the addition of Ni NPs concentrations. To some extent, this result indicates that the single ion anisotropy of magnetic ions Sm 3 þ is affected the Ni NPs local field environment [36] where the main contribution is from the changes of electron spin [37]. Meanwhile, the ZPSN2.0 glass is observed to exhibit the highest coercivity force, H c , which is responsible for the enhancement of magnetizations (see Fig.…”

Section: Resultsmentioning

confidence: 99%

Optical response and magnetic characteristic of samarium doped zinc phosphate glasses containing nickel nanoparticles

Azmi

Sahar

2015

Journal of Magnetism and Magnetic Materials

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“…As a representative, Figure 1 shows the XRD patterns of Ba 3 Tb 1- 3 should belong to the eulytite-type compounds, which crystallize in the cubic system with space group I-43d, and the unit cell dimensions are a=b=c=10.4484(2) Å, α=90°, Z=4, Volume (V)=1140.6(2) Å 3 . 26 As shown in the upper of Figure 1, the general feature of Ba 3 Tb(PO 4 ) 3 structure should be regarded as a threedimensional packing of [PO4] 3anionic tetrahedra and Tb/Ba octahedra, arranged in a manner to share common apices. It is interesting that all the [PO4]…”

Section: Phase Formationmentioning

confidence: 99%

“…It is interesting that all the [PO 4 ] 3À tetrahedral are totally independent while the Tb/Ba octahedra share edges with each other and form a threedimensional network. 26…”

Section: Phase Formationmentioning

confidence: 99%

A series of tunable emission phosphors of Sm³⁺, Eu³⁺ and Mn²⁺ doped Ba₃Tb(PO₄)₃: luminescence and energy transfer

Wang

et al. 2015

RSC Adv.

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A series of activators Sm 3+ , Eu 3+ , Mn 2+ ions doped Ba3Tb(PO4)3 phosphors with tunable emitting color were synthesized via the high temperature solid state method. The X-ray diffraction, luminescence and fluorescent decay curves were used to characterize the phosphor. The obtained powder crystallizes as a cubic unit cell with space group I-43d. Under 377 nm excitation of Tb 3+ , Ba3Tb(PO4)3:Sm 3+ not only presents 5 D4-7 F6-3 of Tb 3+ emission lines but also 4 G5/2-6 H5/2-9/2 of Sm 3+ orange emission lines, Ba3Tb(PO4)3:Eu 3+ contains the emission lines of Tb 3+ and Eu 3+ ( 5 D0-7 F1-4), and Ba3Tb(PO4)3:Mn 2+ exhibits the emission lines of Tb 3+ and 4 T1-6 A1 orange emission band of Mn 2+ . In addition, the intensities of red or orange-red emission can be enhanced by tuning the Sm 3+ , Eu 3+ and Mn 2+ contents. The intense emission intensities of Sm 3+ , Eu 3+ and Mn 2+ ions are attributed to the efficient energy transfer from Tb 3+ to Sm 3+ , Eu 3+ and Mn 2+ ions, respectively, which have been justified through the luminescence spectra and fluorescence decay dynamics. The energy transfer mechanism was demonstrated to be the electric dipole-dipole interaction. For Ba3Tb(PO4)3:Sm 3+ , Ba3Tb(PO4)3:Eu 3+ and Ba3Tb(PO4)3:Mn 2+ , the best quantum efficiencies are 41.6%, 70.3% and 49.8%, respectively. The properties of phosphor indicate that they may be the potential application in UV-pumped white light emitting diodes.

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Ba3Tb(PO4)3: Crystal growth, structure, magnetic and magneto-optical properties

Cited by 19 publications

References 34 publications

Structure and Luminescent Characteristics of Ba3Tb(PO4)3 Doped with Eu3+ Ions

Structure and Luminescent Characteristics of Ba3Tb(PO4)3 Doped with Eu3+ Ions

Optical response and magnetic characteristic of samarium doped zinc phosphate glasses containing nickel nanoparticles

A series of tunable emission phosphors of Sm³⁺, Eu³⁺ and Mn²⁺ doped Ba₃Tb(PO₄)₃: luminescence and energy transfer

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Ba3Tb(PO4)3: Crystal growth, structure, magnetic and magneto-optical properties

Cited by 19 publications

References 34 publications

Structure and Luminescent Characteristics of Ba3Tb(PO4)3 Doped with Eu3+ Ions

Structure and Luminescent Characteristics of Ba3Tb(PO4)3 Doped with Eu3+ Ions

Optical response and magnetic characteristic of samarium doped zinc phosphate glasses containing nickel nanoparticles

A series of tunable emission phosphors of Sm3+, Eu3+ and Mn2+ doped Ba3Tb(PO4)3: luminescence and energy transfer

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A series of tunable emission phosphors of Sm³⁺, Eu³⁺ and Mn²⁺ doped Ba₃Tb(PO₄)₃: luminescence and energy transfer