Synthesis and Characterization of a Magnetic Ceramic Using an Easily Accessible Scale Setup

Autor/inn/en	Ahlburg, Jakob Voldum; Menhinnitt, Zach; Thomas-Hunt, Jack; Saura-Mu´zquiz, Matilde; Christensen, Mogens
Titel	Synthesis and Characterization of a Magnetic Ceramic Using an Easily Accessible Scale Setup
Quelle	In: Journal of Chemical Education, 98 (2021) 8, S.2632-2637 (6 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Saura-Mu´zquiz, Matilde) ORCID (Christensen, Mogens)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
DOI	10.1021/acs.jchemed.1c00143
Schlagwörter	Chemistry; Science Instruction; Magnets; Inorganic Chemistry; Science Activities; Measurement + Suchen Sie Ihr Suchwort? Chemie; Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Stabmagnet; Anorganische Chemie; Messverfahren
Abstract	In this experiment, students explore the synthesis and physical property characterization of the magnetic material strontium hexaferrite (SrFe[subscript 12]O[subscript 19]). SrFe[subscript 12]O[subscript 19] crystallites are prepared by a simple but fascinating sol-gel autocombustion synthesis. The prepared powder is compacted into pellets and sintered. With variation of the sintering temperature, it is possible to modify the magnetic properties. The structural properties of the samples are analyzed by powder X-ray diffraction. A tutorial demonstrates for the students how powder X-ray diffraction data from the sample combined with Rietveld refinement can extract phase purity and crystallite size. The magnetic properties are measured using a simple setup with a scale and a strong neodymium magnet; this gives an intuitive understanding of magnetism and how to measure magnetic properties. Additionally, the magnetic properties are measured with a vibrating sample magnetometer and compared to the results obtained using the simple scale method. The lab exercise can be adapted to different levels of education based on the background of the students and the equipment available in the laboratory. (As Provided).
Anmerkungen	Division of Chemical Education, Inc. and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01