Magnetic ceramics garnets

Magnetic ceramics are further classified according to their crystal structures into spinels, garnets, and hexagonal ferrites. Typical compositions and some of their magnetic properties are listed in Table 15.4. 

Magnetic ceramics are ferrimagnetic and are classified according to their crystal structure into spinels, hexagonal ferrites, and garnets. 

In the ceramics field many of the new advanced ceramic oxides have a specially prepared mixture of cations which determines the crystal structure, through the relative sizes of the cations and oxygen ions, and the physical properties through the choice of cations and tlreh oxidation states. These include, for example, solid electrolytes and electrodes for sensors and fuel cells, fenites and garnets for magnetic systems, zirconates and titanates for piezoelectric materials, as well as ceramic superconductors and a number of other substances... 

Ostorero, J., Le Gall, H., Makram, H. Escorne, M. (1985). The influence of quenching temperature on the magnetic properties of rare-earth garnet HoIG A1 single crystals. In Advances in Ceramics Fourth International Conference on Ferrites, Vol. 15. Ed. F. F. Y. Wang. American Ceramic Society, Ohio, pp. 265-73. 

---