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Title: Physicochemical properties of high-temperature solutions of the systems BaO-B/sub 2/O/sub 3/-Fe/sub 2/O/sub 3/ and BaO-B/sub 2/O/sub 3/-BaF/sub 2/-Fe/sub 2/O/sub 3/ suitable for the growth of BaFe/sub 12/O/sub 19/ single crystals

Abstract

The systems BaO-B/sub 2/O/sub 3/-Fe/sub 2/O/sub 3/ and BaO-B/sub 2/O/sub 3/-BaF/sub 2/-Fe/sub 2/O/sub 3/ have been investigated and the concentration and temperature regions of stability of the Ba Fe/sub 12/O/sub 19/ phase in them are determined with a view to choosing suitable solvents and growth conditions of barium hexaferrite single crystals. The temperature dependencies of the dynamic viscosity of solutions of these systems are studied. It is shown that solutions containing BaF/sub 2/ have considerably lower viscosity values. The density and volatility of the solutions at their saturation temperatures are determined. On the basis of the data obtained, an appropriate solvent composition from the system BaO-B/sub 2/O/sub 3/-BaF/sub 2/ is proposed.

Authors:
; ;  [1]
  1. Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1040 Sofia (BG)
Publication Date:
OSTI Identifier:
5212624
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin; (USA)
Additional Journal Information:
Journal Volume: 24:8; Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BARIUM OXIDES; VISCOSITY; BORON OXIDES; IRON OXIDES; SOLUTIONS; STABILITY; CHEMICAL COMPOSITION; CHEMICAL PROPERTIES; CRYSTAL GROWTH; HIGH TEMPERATURE; MONOCRYSTALS; TEMPERATURE DEPENDENCE; ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; BORON COMPOUNDS; CHALCOGENIDES; CRYSTALS; DISPERSIONS; IRON COMPOUNDS; MIXTURES; OXIDES; OXYGEN COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; 360204* - Ceramics, Cermets, & Refractories- Physical Properties; 400201 - Chemical & Physicochemical Properties

Citation Formats

Peshev, P, Varadinov, R, and Nikolov, V. Physicochemical properties of high-temperature solutions of the systems BaO-B/sub 2/O/sub 3/-Fe/sub 2/O/sub 3/ and BaO-B/sub 2/O/sub 3/-BaF/sub 2/-Fe/sub 2/O/sub 3/ suitable for the growth of BaFe/sub 12/O/sub 19/ single crystals. United States: N. p., 1989. Web. doi:10.1016/0025-5408(89)90182-7.
Peshev, P, Varadinov, R, & Nikolov, V. Physicochemical properties of high-temperature solutions of the systems BaO-B/sub 2/O/sub 3/-Fe/sub 2/O/sub 3/ and BaO-B/sub 2/O/sub 3/-BaF/sub 2/-Fe/sub 2/O/sub 3/ suitable for the growth of BaFe/sub 12/O/sub 19/ single crystals. United States. https://doi.org/10.1016/0025-5408(89)90182-7
Peshev, P, Varadinov, R, and Nikolov, V. 1989. "Physicochemical properties of high-temperature solutions of the systems BaO-B/sub 2/O/sub 3/-Fe/sub 2/O/sub 3/ and BaO-B/sub 2/O/sub 3/-BaF/sub 2/-Fe/sub 2/O/sub 3/ suitable for the growth of BaFe/sub 12/O/sub 19/ single crystals". United States. https://doi.org/10.1016/0025-5408(89)90182-7.
@article{osti_5212624,
title = {Physicochemical properties of high-temperature solutions of the systems BaO-B/sub 2/O/sub 3/-Fe/sub 2/O/sub 3/ and BaO-B/sub 2/O/sub 3/-BaF/sub 2/-Fe/sub 2/O/sub 3/ suitable for the growth of BaFe/sub 12/O/sub 19/ single crystals},
author = {Peshev, P and Varadinov, R and Nikolov, V},
abstractNote = {The systems BaO-B/sub 2/O/sub 3/-Fe/sub 2/O/sub 3/ and BaO-B/sub 2/O/sub 3/-BaF/sub 2/-Fe/sub 2/O/sub 3/ have been investigated and the concentration and temperature regions of stability of the Ba Fe/sub 12/O/sub 19/ phase in them are determined with a view to choosing suitable solvents and growth conditions of barium hexaferrite single crystals. The temperature dependencies of the dynamic viscosity of solutions of these systems are studied. It is shown that solutions containing BaF/sub 2/ have considerably lower viscosity values. The density and volatility of the solutions at their saturation temperatures are determined. On the basis of the data obtained, an appropriate solvent composition from the system BaO-B/sub 2/O/sub 3/-BaF/sub 2/ is proposed.},
doi = {10.1016/0025-5408(89)90182-7},
url = {https://www.osti.gov/biblio/5212624}, journal = {Materials Research Bulletin; (USA)},
issn = {0025-5408},
number = ,
volume = 24:8,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 1989},
month = {Tue Aug 01 00:00:00 EDT 1989}
}