Flux Growth and Crystal Structure Refinement of Calcite Type Borate GaBO3

Wang, Shichao; Ye, Ning; Poeppelmeier, Kenneth R.

doi:10.3390/cryst5020252

Cited by 16 publications

(10 citation statements)

References 20 publications

(23 reference statements)

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“…Currently, there are more than ten already known structural types of oxyborates: warwickites, ludwigites, kotoites, huntites, calcite, pyroborates, etc. . Oxyborates’ main feature is a presence of low‐dimensional elements: stairs, zigzag walls, tapes, etc.…”

Section: Introductionmentioning

confidence: 99%

Ludwigites: From natural mineral to modern solid solutions

Софронова

Назаренко

2017

Crystal Research and Technology

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Ludwigites is a type of oxyborates compounds with BO 3 groups, which have low-dimensional elements: stairs, zigzag walls, tapes. Such structural features influence on the physical properties of the compounds and cause charge ordering, the existence of two magnetic subsystems, ordered at different temperatures in the perpendicular direction, the quasi-one-dimensional magnetism, spin-glass state. In this survey, we have summarized all known experimental and theoretical studies and analyzed the proposed by the authors mechanisms of phase transitions in the ludwigite structure oxyborates.

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Section: Introductionmentioning

confidence: 99%

Ludwigites: From natural mineral to modern solid solutions

Софронова

Назаренко

2017

Crystal Research and Technology

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“…In this method, the reactant materials are completely dissolved in molten salt to obtain a uniform liquid, and a single crystal with large size can then be obtained by limiting the number of nuclei formed during cooling. Up to now, many mixed-metal oxides, sulfides, and complex intermetallics have been successfully obtained using this method [10][11][12][13]. We think the Na 2 O-B 2 O 3 system can be used as a good flux for the low melting point (700~900 • C) and powerful dissolving capacity for many oxides, including refractory rare-earth oxides.…”

Section: Introductionmentioning

confidence: 99%

Structure Determination and Luminescent Property Studies of the Single Crystal Na3Sm(BO3)2

Zhao

Nie

et al. 2017

Crystals

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Sodium samarium borate Na 3 Sm(BO 3 ) 2 , was prepared by a flux method and structurally characterized by single-crystal structure analysis for the first time. The results show that it crystallizes in the monoclinic system P2 1 /n, with a = 6.5667(3) Å, b = 8.7675(4) Å, c = 10.1850(5), β = 90.86 • , V = 586.32(5) Å 3 and Z = 4. The structure contains NaO 7 , NaO 6 , NaO 5 , SmO 8 , and BO 3 units, which are interconnected via corner-or edge-sharing O atoms into a three-dimensional structure. The excitation spectra, emission spectra, decay time, and Commission International de l'Éclairage (CIE) chromaticity index of Na 3 Sm(BO 3 ) 2 were studied. Under near light excitation (406 nm), the powdered Na 3 Sm(BO 3 ) 2 shows the orange-red emission, which originates from the 4 G 5/2 → 6 H 9/2 and 4 G 5/2 → 6 H 7/2 transformation of Sm 3+ ion.

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“…AlBO 3 requires hydrothermal high-pressure synthesis techniques [73] since it does not lie on the convex hull, but once synthesized, remains stable. In addition, single crystals of InBO 3 , ScBO 3 , and GaBO 3 have been grown via molten flux at ambient pressures with the GaBO 3 crystals measuring 4 × 4 × 0.2 mm 3 [73,74]. Despite this easy synthesis, to our knowledge no one has attempted to dope these materials or research them for power electronic applications.…”

Section: (Iii)bo3 Familymentioning

confidence: 99%

Ternary Wide Band Gap Oxides for High-Power Electronics Identified Computationally

Garrity¹,

Lee²,

Gorai³

et al. 2022

Preprint

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As electricity grids become more renewable energy-compliant, there will be a need for novel semiconductors that can withstand high power, high voltage, and high temperatures. Wide band gap (WBG) semiconductors tend to exhibit large breakdown field, allowing high operating voltages. Currently explored WBG materials for power electronics are costly (GaN), difficult to synthesize as high-quality single crystals (SiC) and at scale (diamond, BN), have low thermal conductivity (β-Ga2O3), or cannot be suitably doped (AlN). We conduct a computational search for novel semiconductors across 1,340 known metal-oxides using first-principles calculations and existing transport models. We calculate the Baliga figure of merit (BFOM) and lattice thermal conductivity (κL) to identify top candidates for n-type power electronics. We find 40 mostly ternary oxides that have higher κL than β-Ga2O3 and higher n-type BFOM than SiC and GaN. Among these, several material classes emerge, including 2-2-7 stoichiometry thortveitites and pyrochlores, II-IV spinels, and calcite-type borates. Within these classes, we propose In2Ge2O7, Mg2GeO4, and InBO3 as they are the most favorable for n-type doping based on our preliminary evaluation and could be grown as single crystals or thin film heterostructures. These materials could help advance power electronic devices for the future grid.

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Flux Growth and Crystal Structure Refinement of Calcite Type Borate GaBO3

Cited by 16 publications

References 20 publications

Ludwigites: From natural mineral to modern solid solutions

Ludwigites: From natural mineral to modern solid solutions

Structure Determination and Luminescent Property Studies of the Single Crystal Na3Sm(BO3)2

Ternary Wide Band Gap Oxides for High-Power Electronics Identified Computationally

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