Ultrafine particles of barium ferrite from a citrate precursor
โ Scribed by V.K. Sankaranarayanan; Q.A. Pankhurst; D.P.E. Dickson; C.E. Johnson
- Book ID
- 113318710
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 312 KB
- Volume
- 120
- Category
- Article
- ISSN
- 0304-8853
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๐ SIMILAR VOLUMES
TiCl 4 or titanium isopropoxide reacted with citric acid to form a titanyl citrate precipitate. Barium strontium citrate solutions were then added to the titanyl citrate reaction to form gels. These gels were dried and calcined to (Ba,Sr)-TiO 3 powders. The gels and powders were characterized by DSC
The barium ferrite ultrafine particles were synthesized by coprecipitation in an aqueous solution with polyacrylic acid (PAA) as a protective agent. Thermal analysis by TGA/DTA showed that the precursor could yield barium ferrite after calcination above 700 โข C for 2 h. By analyses of the XRD and el