Growth of single crystals of BaFe12O19 by solid state crystal growth

Fisher, John G.; Sun, Hengyang; Kook, Y.H.; Kim, Joon-Seong; Le, Phan Gia

doi:10.1016/j.jmmm.2016.04.079

Cited by 28 publications

(11 citation statements)

References 46 publications

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“…In all such modified ferrites, it is necessary that substituted ions maintain electrical neutrality and also have similar ionic radii to the original one [17]. A wide range of possible compositions of these ferrites were synthesized by various synthesis techniques [18,19,20]. Still, little is known about the influence of substitution by nonmagnetic ions on the Ba site or by impurities such as sodium.…”

Section: Introductionmentioning

confidence: 99%

Magnetic and Structural Properties of Barium Hexaferrite BaFe12O19 from Various Growth Techniques

et al. 2017

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Barium hexaferrite powder samples with grains in the μm-range were obtained from solid-state sintering, and crystals with sizes up to 5 mm grown from PbO, Na2CO3, and BaB2O4 fluxes, respectively. Carbonate and borate fluxes provide the largest and structurally best crystals at significantly lower growth temperatures of 1533 K compared to flux-free synthesis (1623 K). The maximum synthesis temperature can be further reduced by the application of PbO-containing fluxes (down to 1223 K upon use of 80 at % PbO), however, Pb-substituted crystals Ba1–xPbxFe12O19 with Pb contents in the range of 0.23(2) ≤ x ≤ 0.80(2) form, depending on growth temperature and flux PbO content. The degree of Pb-substitution has only a minor influence on unit cell and magnetic parameters, although the values for Curie temperature, saturation magnetization, as well as the coercivity of these samples are significantly reduced in comparison with those from samples obtained from the other fluxes. Due to the lowest level of impurities, the samples from carbonate flux show superior quality compared to materials obtained using other methods.

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Section: Introductionmentioning

confidence: 99%

Magnetic and Structural Properties of Barium Hexaferrite BaFe12O19 from Various Growth Techniques

et al. 2017

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“…In the solid state crystal growth technique, the seed crystal acts as a rapidly growing abnormal grain and consumes the surrounding matrix grains, causing a single crystal of the matrix composition to grow epitaxially onto the seed [41,55]. For single crystal growth to take place, the grain boundaries must be ordered [41,56], as was found in previous work on NBTbased ceramics [13,57,58] and as indicated by the presence of micro-facets at the grain boundaries ( Figure S 3(a)) [59].…”

Section: Discussionmentioning

confidence: 99%

Solid state crystal growth of single crystals of 0.75(Na_1/2Bi_1/2)TiO₃-0.25SrTiO₃ and their characteristic electrical properties

Pham

Nguyen

Lee

et al. 2020

Journal of Asian Ceramic Societies

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“…In 2016, Fisher et al [92] reported on the growth of a BaFe 12 O 19 single crystal via the SSCG method. The authors prepared the samples by cold isostatic pressing the polycrystalline powder with a seed crystal which was buried inside the powder compact, following heat treatment.…”

Section: Other Oxide Materialsmentioning

confidence: 99%

Current status of solid-state single crystal growth

Milisavljevic

2020

BMC Mat

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Fabrication of single crystals has long been limited to melt-and solution-growth techniques. However, in recent years solid-state single crystal growth (SSCG) has appeared as a promising alternative to the conventional techniques due to its cost-effectiveness and simplicity in terms of processing. Moreover, the SSCG technique has enabled the fabrication of single crystals with complex chemical compositions and even incongruent melting behavior. A recently proposed mechanism of grain boundary migration known as the "mixed control mechanism" and the associated principles of microstructural evolution represent the basis of the SSCG technique. The mixed control mechanism has been successfully used to control the key aspects of the SSCG technique, which are the grain growth and the development of the microstructure during the conversion process of the single crystal from the polycrystalline matrix. This paper explains in brief basis of the mixed control mechanism and the underlying principles of microstructural evolution in polycrystalline materials and provides a comprehensive overview of the most recent research on single crystal materials fabricated via the solid-state single crystal growth technique and their properties.

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Growth of single crystals of BaFe12O19 by solid state crystal growth

Cited by 28 publications

References 46 publications

Magnetic and Structural Properties of Barium Hexaferrite BaFe12O19 from Various Growth Techniques

Magnetic and Structural Properties of Barium Hexaferrite BaFe12O19 from Various Growth Techniques

Solid state crystal growth of single crystals of 0.75(Na_1/2Bi_1/2)TiO₃-0.25SrTiO₃ and their characteristic electrical properties

Current status of solid-state single crystal growth

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Growth of single crystals of BaFe12O19 by solid state crystal growth

Cited by 28 publications

References 46 publications

Magnetic and Structural Properties of Barium Hexaferrite BaFe12O19 from Various Growth Techniques

Magnetic and Structural Properties of Barium Hexaferrite BaFe12O19 from Various Growth Techniques

Solid state crystal growth of single crystals of 0.75(Na1/2Bi1/2)TiO3-0.25SrTiO3 and their characteristic electrical properties

Current status of solid-state single crystal growth

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Solid state crystal growth of single crystals of 0.75(Na_1/2Bi_1/2)TiO₃-0.25SrTiO₃ and their characteristic electrical properties