Synthesis, 89Y and 51V-NMR of Er-doped zircon-type YVO4 and LUVO4

Amantea, Roberta; Ghigna, Paolo; Mustarelli, Piercarlo; Tartara, V.

doi:10.1016/j.jssc.2005.03.014

Cited by 7 publications

(4 citation statements)

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“…Figure shows 89 Y MAS NMR spectra of some doped crystalline model compounds and representative glasses. Our results on the crystalline materials are in excellent agreement with literature data, regarding previous measurements on Y 2 O 3 , , YAG, , YVO 4 , YAlO 3 , , YBO 3 , and YAB . The 89 Y chemical shifts of the crystalline materials (Table ) span the range from −66 ppm in doped YVO 4 to +314 ppm in doped Y 2 O 3 .…”

Section: Results Data Analysis and Interpretationsupporting

confidence: 91%

“…Additional difficulties arise from long spin−lattice relaxation times, requiring the use of long recycle delays during signal averaging. Although 89 Y NMR has thus far been applied to numerous crystalline model compounds and ceramics, − to the best of our knowledge, no structural studies of glasses have appeared in the literature to date. Here we show that static and MAS NMR spectra with excellent signal-to-noise ratios can be obtained by using a combination of paramagnetic doping and direct acquisition of Carr-Purcell spin echo trains .…”

Section: Introductionmentioning

confidence: 99%

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Structural Characterization of Rare-Earth Doped Yttrium Aluminoborate Laser Glasses Using Solid State NMR

et al. 2009

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The structure of laser glasses in the system (B 2 O 3 ) 0.6 {(Al 2 O 3 ) 0.4-x (Y 2 O 3 ) x } (0.1 e x e 0.25) has been investigated by means of 11 B, 27 Al, and 89 Y solid state NMR as well as Y-3d core-level X-ray photoelectron spectroscopy. 11B magic-angle spinning (MAS) NMR spectra reveal that the majority of the boron atoms are three-coordinated, and a slight increase of four-coordinated boron content with increasing x can be noticed. 27 Al MAS NMR spectra show that the alumina species are present in the coordination states four, five and six. All of them are in intimate contact with both the three-and the four-coordinate boron species and vice versa, as indicated by 11 B/ 27 Al rotational echo double resonance (REDOR) data. These results are consistent with the formation of a homogeneous, nonsegregated glass structure. For the first time, 89 Y solid state NMR has been used to probe the local environment of Y 3+ ions in a glass-forming system. The intrinsic sensitivity problem associated with 89 Y NMR has been overcome by combining the benefits of paramagnetic doping with those of signal accumulation via Carr-Purcell spin echo trains. Both the 89 Y chemical shifts and the Y-3d core level binding energies are found to be rather sensitive to the yttrium bonding state and reveal that the bonding properties of the yttrium atoms in these glasses are similar to those found in the model compounds YBO 3 and YAl 3 (BO 3 ) 4 . Based on charge balance considerations as well as 11 B NMR line shape analyses, the dominant borate species are concluded to be meta-and pyroborate anions.

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Section: Results Data Analysis and Interpretationsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Structural Characterization of Rare-Earth Doped Yttrium Aluminoborate Laser Glasses Using Solid State NMR

et al. 2009

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“…On the other hand, this is reasonable because of the diamagnetic nature of the cations involved in the mixing. In contrast, it was recently shown that the addition of 1 mol % erbium to rare-earth vanadates causes the appearance of a new site in the 51 V spectrum . Also, Raman signal features support this evidence: the band peaked at 838 cm -1 , due to VO 4 vibration, is very narrow (Figure ), as expected in cases of the absence of cation substitution.…”

Section: Discussionmentioning

confidence: 73%

Cation Distribution in LiMgVO₄ and LiZnVO₄: Structural and Spectroscopic Study

et al. 2006

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The room temperature cation occupancy in LiMgVO(4) and LiZnVO(4) crystallographic sites is obtained by means of the combined use of X-ray powder diffraction (XRPD), (7)Li and (51)V magic angle spinning nuclear magnetic resonance (MAS NMR), and micro-Raman measurements. In the LiMgVO(4) Cmcm orthorhombic structure, the 4c (C(2)(v) symmetry) tetrahedral vanadium site is fully ordered; on the contrary, the Li 4c tetrahedral site and the 4b (C(2)(h) symmetry) Mg octahedral site display about 22% of reciprocal cationic exchange. Higher cationic disorder is observed in LiZnVO(4): the three cations can distribute on the three tetrahedral and distinct sites of the R-3 structure. XRPD and MAS NMR analysis results highly agree for what concerns vanadium ion distribution on the three cationic sites (about 25, 26, and 47%). From the full profile fitting of XRPD patterns with the Rietveld method, it is also obtained that Li(+) displays a slightly preferred occupation of the T1 position (approximately 55%) and Zn(2+) of the T2 position (approximately 46%). The vibrational spectra of the two compounds are characterized by different peak positions and broadening of the Raman modes, reflecting the cation distribution and the local vibrational unit distortion. A comparison is also made with recent Raman results on Li(3)VO(4). High temperature XRPD measurements rule out possible structural transitions up to 673 K for both compounds.

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“…97 89 Y MAS NMR has been reported from 1% erbium-doped YVO 4 which adopts a zircon structure. 98 A single peak is observed with an isotropic chemical shift of 66 ppm, and a full-width at half-height (FWHH) of about 120 Hz. Yttrium occurs in YO 8 units in this structure which is consistent with the shift.…”

Section: Applications To Inorganic Materialsmentioning

confidence: 99%

Recent progress in solid-state NMR of spin-½ low-γ nuclei applied to inorganic materials

Smith

2023

Phys. Chem. Chem. Phys.

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Synthesis, 89Y and 51V-NMR of Er-doped zircon-type YVO4 and LUVO4

Cited by 7 publications

References 25 publications

Structural Characterization of Rare-Earth Doped Yttrium Aluminoborate Laser Glasses Using Solid State NMR

Structural Characterization of Rare-Earth Doped Yttrium Aluminoborate Laser Glasses Using Solid State NMR

Cation Distribution in LiMgVO₄ and LiZnVO₄: Structural and Spectroscopic Study

Recent progress in solid-state NMR of spin-½ low-γ nuclei applied to inorganic materials

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Synthesis, 89Y and 51V-NMR of Er-doped zircon-type YVO4 and LUVO4

Cited by 7 publications

References 25 publications

Structural Characterization of Rare-Earth Doped Yttrium Aluminoborate Laser Glasses Using Solid State NMR

Structural Characterization of Rare-Earth Doped Yttrium Aluminoborate Laser Glasses Using Solid State NMR

Cation Distribution in LiMgVO4 and LiZnVO4: Structural and Spectroscopic Study

Recent progress in solid-state NMR of spin-½ low-γ nuclei applied to inorganic materials

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Cation Distribution in LiMgVO₄ and LiZnVO₄: Structural and Spectroscopic Study