Growth and properties of manganese doped Ca3(VO4)2 single crystals

Voronina, I.S.; Voronov, V. V.; Dunaeva, E.E.; Iskhakova, L.D.; Papashvili, A.G.; Doroshenko, Maxim E.; Ивлева, Л. И.

doi:10.1016/j.jcrysgro.2020.125965

Cited by 19 publications

(36 citation statements)

References 18 publications

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“…A room temperature absorption spectroscopic investigation of green (the above crystal color is in accordance with ref. 25) Ca 3 (VO 4 ) 2 :0.05Mn revealed three bands. 25 The first shortest absorption peak at ∼460 nm is ascribed to Mn 2+ ions based on literature data (in MgAl 2 O 4 spinel; Mn 2+ dopant ions occupy Mg 2+ tetrahedra 26 ).…”

Section: Introductionmentioning

confidence: 98%

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Revealing the peculiar local behavior of manganese and cobalt in diffusion-doped calcium orthovanadate Ca₃(VO₄)₂

et al. 2022

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Section: Introductionmentioning

confidence: 98%

“…25) Ca 3 (VO 4 ) 2 :0.05Mn revealed three bands. 25 The first shortest absorption peak at ∼460 nm is ascribed to Mn 2+ ions based on literature data (in MgAl 2 O 4 spinel; Mn 2+ dopant ions occupy Mg 2+ tetrahedra 26 ). However, in ref.…”

Section: Introductionmentioning

confidence: 98%

Revealing the peculiar local behavior of manganese and cobalt in diffusion-doped calcium orthovanadate Ca₃(VO₄)₂

et al. 2022

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“…The studied nominally pure CVO single crystals, and those doped with Mn ions (at 0.05% and 0.1%), were grown from the melt, in air, by the Czochralski method with pulling in [100] directions [7]. The grown crystals were about 12 mm in diameter and up to 45 mm in length.…”

Section: Methodsmentioning

confidence: 99%

“…CVO possesses the trigonal space group R3c [2], and, being acentric, demonstrates intense second harmonic generation. Recently, nominally pure CVO crystals, and those doped by Mn and rare earth elements (Tm, Ho), have become of special interest due to their potential application as a new active medium for 2 µm lasers [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…The domains at the surface of CVO plates, revealed by etching in a 0.5% boric acid solution, are usually imaged by optical microscopy [2,4,5,7]. Recently, it has been demon-strated that confocal Raman microscopy (CRM) [8] and piezoelectric force microscopy (PFM) [9] could be used for detail analysis of as-grown domain structure in CVO [10].…”

Section: Introductionmentioning

confidence: 99%

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As-Grown Domain Structure in Calcium Orthovanadate Crystals

et al. 2021

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An as-grown domain structure in nominally pure and Mn-doped calcium orthovanadate (CVO) crystals was studied by several methods of domain imaging: optical microscopy, piezoelectric force microscopy, and Cherenkov-type second harmonic generation. The combination of imaging methods provided an opportunity for comprehensive study of the domain structure on the polar surface and in the bulk of the samples. It was shown that, in nominally pure CVO crystals, an irregular 3D maze of rounded domains, with charged walls, essentially tilted from the polar direction, was present. It was proposed that the domain structure was formed just below the phase transition temperature and persisted during subsequent cooling. Such behavior is due to effective bulk screening of the depolarization field and a low value of the pyroelectric field which appears during cooling. The revealed formation of triangular domains and flat fragments of domain walls in Mn-doped CVO was attributed to polarization reversal under the action of the polar component of the pyroelectric field, above the threshold value for domain switching. This fact represents the first observation of the domain switching in CVO crystals.

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Spectroscopic Properties of Cobalt Ions in Ca₃(VO₄)₂ Crystals Doped via Thermal Diffusion and During Synthesis

Doroshenko,

Ivleva,

Papashvili

et al. 2024

Physica Status Solidi (a)

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The spectroscopic properties of cobalt ions in Ca3(VO4)2 crystals doped via thermal diffusion and during synthesis are investigated. The diffusion doped crystal shows the potential for higher cobalt doping while maintaining its high initial optical quality. The redistribution of several absorption and fluorescence lines intensities with cobalt concentration is attributed to the formation of Co2+ optical centers with sufficiently different local environments. The fluorescence decay times of Co2+ optical centers are measured to differ by an order of magnitude (95 and 13 μs) and are attributed to centrosymmetric M1 and low symmetry M2 types of Co2+ optical centers, possibly corresponding to Ca(4) and Ca(1) positions of Ca3(VO4)2 crystal, respectively. Nonlinear transmission of Co2+ M2 centers is measured, and efficient absorption cross‐sections of 1.4 × 10−19 and 2.4 × 10−19 cm2 are evaluated at 1300 and 1500 nm, respectively. The narrow fluorescence line of cobalt ions peaking at about 1170 nm, detected in both Ca3(VO4)2 crystals doped via thermal diffusion and during synthesis, is attributed to Co ions in a trivalent state.

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Growth and properties of manganese doped Ca3(VO4)2 single crystals

Cited by 19 publications

References 18 publications

Revealing the peculiar local behavior of manganese and cobalt in diffusion-doped calcium orthovanadate Ca₃(VO₄)₂

Revealing the peculiar local behavior of manganese and cobalt in diffusion-doped calcium orthovanadate Ca₃(VO₄)₂

As-Grown Domain Structure in Calcium Orthovanadate Crystals

Spectroscopic Properties of Cobalt Ions in Ca₃(VO₄)₂ Crystals Doped via Thermal Diffusion and During Synthesis

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Growth and properties of manganese doped Ca3(VO4)2 single crystals

Cited by 19 publications

References 18 publications

Revealing the peculiar local behavior of manganese and cobalt in diffusion-doped calcium orthovanadate Ca3(VO4)2

Revealing the peculiar local behavior of manganese and cobalt in diffusion-doped calcium orthovanadate Ca3(VO4)2

As-Grown Domain Structure in Calcium Orthovanadate Crystals

Spectroscopic Properties of Cobalt Ions in Ca3(VO4)2 Crystals Doped via Thermal Diffusion and During Synthesis

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Product

Resources

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Revealing the peculiar local behavior of manganese and cobalt in diffusion-doped calcium orthovanadate Ca₃(VO₄)₂

Revealing the peculiar local behavior of manganese and cobalt in diffusion-doped calcium orthovanadate Ca₃(VO₄)₂

Spectroscopic Properties of Cobalt Ions in Ca₃(VO₄)₂ Crystals Doped via Thermal Diffusion and During Synthesis