On the chemical composition of the magnetoplumbite

Blix, Ragnar

doi:10.1080/11035893709444959

Cited by 4 publications

(1 citation statement)

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“…Many researchers focus on substituting iron, barium or both and the resulting influence on the structure and properties. Substitutions with various isovalent cations have been reported, like strontium(II) and lead(II) for barium(II) [14,15] as well as aluminum(III) and chromium(III) for iron(III) [16,17]. Furthermore, aliovalent substitutions are possible, such as lanthanum(III) [18] on the alkaline earth metal site and copper(II), titanium(IV) or tungsten(VI) for the transition metal [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Thermal History Dependent Al Distribution in Aluminum Substituted Strontium Hexaferrite

2020

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Single crystals of aluminum substituted strontium hexaferrite SrFe12–xAlxO19 were grown from sodium oxide based flux. The substitution level aimed for was x = 1.2. Annealing experiments performed on single crystals show that the Al distribution on the five iron sites of the hexaferrite structure depends on the annealing time at 900 °C. Single crystal X-ray diffractometry shows that annealing a crystal after the initial synthesis has an impact on the Al content on the octahedrally and tetrahedrally coordinated sites. Furthermore, it was found that heating in a corundum crucible increases the overall Al content. Magnetic measurements show that annealing in a platinum or corundum crucible decreases coercivity and remanence while the saturation magnetization is hardly influenced.

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