@article{oai:nagano-nct.repo.nii.ac.jp:00000304,
 author = {森山, 実},
 journal = {長野工業高等専門学校紀要},
 month = {Dec},
 note = {application, The experiment of making ferrite magnet has been introduced to the school experiment for fifth-grade students in the department of electronics and control engineering of Nagano National College of Technology since 1998. The intentions of designing this experiment are as follows. ① The students entertain friendly sentiments toward a functional material such as a magnet, ② they improve their knowledge of chemistry as they make the magnet using chemical reaction, ③ they can be interested in a hand-make magnet that is near by in the daily life. The largest feature of the experiment is that manufacturing process is highly pure chemical. The start materials are not regular raw powders sold on the market but chemical reagents such as FeCl_2 and BaCl_2. They react with NaOH and Na_2CO_3 in the liquid phase and precipitate the solid phase of both iron hydroxide and barium carbonate. The sediments are calcined at 950℃, formed under a pressure of 98MPa, sintered at 1100℃ for 7.2ks, and then magnetized in a strong magnetic field using solenoid coils. The students have to calculate the required moles of reagents based on the chemical reaction, and they can compare the experimental results with theoretical ones. They seem to be interested in the hand-made magnet and understand a chemical reaction.},
 pages = {99--104},
 title = {フェライト磁石の作製とその評価 : 学生実験},
 volume = {33},
 year = {1999}
}