Cellular growth in BaFe12O19 crystals solidified from flux solvent

Aidelberg, J.; Flicstein, J.; Schieber, M.

doi:10.1016/0022-0248(74)90005-0

Cited by 32 publications

(8 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As was earlier observed [26], the PbO flux causes the growth of crystals with partial substitution of Ba by Pb, resulting in a general composition of Ba 1– x Pb x Fe 12 O 19 . Unit cell determination from powder diffraction (Table 2) already indicates a composition dependence of the lead content x on the flux composition and growth temperature.…”

Section: Discussionsupporting

confidence: 58%

“…Barium hexaferrite crystals previously have been grown from PbO flux at 1473 K [26]. To investigate the optimal temperature for the growth process applying PbO flux, experiments were carried out with different flux contents of 60, 70, and 80 at % PbO.…”

Section: Discussionmentioning

confidence: 99%

“…One result is the increasing Pb content with increasing Pb concentration in the flux from Ba 0.77(2) Pb 0.23 Fe 12 O 19 at 60 at % PbO over Ba 0.56(2) Pb 0.44 Fe 12 O 19 at 70 at % PbO to Ba 0.20(3) Pb 0.80 Fe 12 O 19 at 80 at % PbO. Earlier, an approximate composition of Ba 0.9 Pb 0.1 Fe 12 O 19 was discussed for a PbO flux proportion of 50 at % at 1473 K [26]. …”

Section: Discussionmentioning

confidence: 99%

“…An important task is to find a solvent or flux capable of both lowering the melting point, and ensuring the crystallization of barium hexaferrite phases. Of particular interest are carbonate fluxes [24,25], borate fluxes [26,27], and lead oxide fluxes [26,28], which led to promising results. However, little detailed data about PbO solvent use has been presented.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

et al. 2017

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionsupporting

confidence: 58%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Application of fluxes as employed in our work combine both advantages by working at comparable low temperatures, which reduces the evaporation and provides more stable crystal growth conditions. For the barium hexaferrite single crystal growth selfflux (BaO) [24] as well as Na 2 O-B 2 O 3 [25], BaO-B 2 O 3 -PbO [26], BaCl 2 -B 2 O 3 [27][28], or Na 2 O [29][30][31] were successfully employed. It was found that the efficiency of various solvents for different dopants can vary [32].…”

Section: Introductionmentioning

confidence: 99%

Growth of Lead and Aluminum Substituted Barium Hexaferrite Single Crystals from Lead Oxide Flux

Винник

Gudkova

Niewa

2016

MSF

View full text Add to dashboard Cite

Lead and aluminum substituted barium hexaferrite (Ba,Pb)Fe12–хAlхO19 single crystals were grown from lead oxide flux at 1260 °C as hexagonal plates with sizes of about 2 mm. A maximum substitution level of x = 4.82 was achieved for the first time for bulk single crystals. The variation of the unit cell parameters with Al content is in good agreement with literature data on exclusively Al substituted barium hexaferrite, while the substitution of Ba by Pb has hardly any influence. Similarly, Pb has only a negligible influence on the magnetic properties, while Al substitution significantly reduces the saturation magnetization in a very similar manner as known from Pb-free barium hexaferrite.

show abstract

Hexagonale Ferrite aus Schmelzen und wäßrigen Lösungen, Materialien für magnetische Aufzeichnungen

Hibst

2006

Angewandte Chemie

View full text Add to dashboard Cite

Cellular growth in BaFe12O19 crystals solidified from flux solvent

Cited by 32 publications

References 14 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

Growth of Lead and Aluminum Substituted Barium Hexaferrite Single Crystals from Lead Oxide Flux

Hexagonale Ferrite aus Schmelzen und wäßrigen Lösungen, Materialien für magnetische Aufzeichnungen

Contact Info

Product

Resources

About