Physicochemical properties of high-temperature solutions of the system Na/sub 2/O-B/sub 2/O/sub 3/-BaO-Fe/sub 2/O/sub 3/ suitable for the growth of BaFe/sub 12/O/sub 19/ single crystals

Journal Article · Sat Jul 01 00:00:00 EDT 1989 · Materials Research Bulletin; (USA)

DOI:https://doi.org/10.1016/0025-5408(89)90054-8· OSTI ID:5371375

Peshev, P; Varadinov, R; Nikolov, V ^[1]

---

1. Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1040 Sofia (BG)

The system Na/sub 2/O-B/sub 2/O/sub 3/-BaO-Fe/sub 2/O/sub 3/ has been studied in order to find appropriate solvents and conditions of growth of barium hexaferrite from high-temperature solutions. The concentration and temperature regions of stability of the phase BaFe/sub 12/O/sub 19/ have been determined. The temperature dependences of the dynamic viscosities of solutions of this system are established and data on the density and volatility of the latter are obtained. On the basis of the experimental results, a solvent composition is proposed consisting of 70 mol % Na/sub 2/O and 30 mol % B/sub 2/O/sub 3/. The advantages of this solvent in comparison with the B/sub 2/O/sub 3/ and Na/sub 2/O based solvents used up to now are discussed.

• OSTI ID: 5371375
• Journal Information: Materials Research Bulletin; (USA), Vol. 24:7; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BARIUM OXIDES
CRYSTAL GROWTH
BORON OXIDES
IRON OXIDES
SODIUM OXIDES
SOLID SOLUTIONS
CHEMICAL PROPERTIES
VISCOSITY
CHEMICAL COMPOSITION
EXPERIMENTAL DATA
HIGH TEMPERATURE
MONOCRYSTALS
PHASE STUDIES
SOLVENTS
STABILITY
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BORON COMPOUNDS
CHALCOGENIDES
CRYSTALS
DATA
DISPERSIONS
INFORMATION
IRON COMPOUNDS
MIXTURES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SODIUM COMPOUNDS
SOLUTIONS
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
400201 - Chemical & Physicochemical Properties