TY - JOUR
T1 - Synthesis and Characterization of a Magnetic Ceramic Using an Easily Accessible Scale Setup
AU - Ahlburg, Jakob Voldum
AU - Menhinnitt, Zach
AU - Thomas-Hunt, Jack
AU - Saura-Múzquiz, Matilde
AU - Christensen, Mogens
N1 - Publisher Copyright:
©
PY - 2021/8
Y1 - 2021/8
N2 - In this experiment, students explore the synthesis and physical property characterization of the magnetic material strontium hexaferrite (SrFe12O19). SrFe12O19 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.
AB - In this experiment, students explore the synthesis and physical property characterization of the magnetic material strontium hexaferrite (SrFe12O19). SrFe12O19 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.
KW - Crystals/Crystallography
KW - First-Year Undergraduate/General
KW - Hands-On Learning/Manipulatives
KW - Inorganic Chemistry
KW - Laboratory Instruction
KW - Magnetic Properties
KW - Nanotechnology
KW - Synthesis
KW - X-ray Crystallography
UR - http://www.scopus.com/inward/record.url?scp=85111128062&partnerID=8YFLogxK
U2 - 10.1021/acs.jchemed.1c00143
DO - 10.1021/acs.jchemed.1c00143
M3 - Journal article
AN - SCOPUS:85111128062
SN - 0021-9584
VL - 98
SP - 2632
EP - 2637
JO - Journal of Chemical Education
JF - Journal of Chemical Education
IS - 8
ER -