Answer Happy

61)Which of the following is not a similarity between ferromagnetic and ferrimagnetic materials? (a) There is a coupling interaction between magnetic moments of adjacent atoms/cations for both material types. (b) Both ferromagnets and ferrimagnets form domains. (c) Hysteresis B-Ħ behavior is displayed for both, and, thus, permanent magnetizations are possible. (d) Both can be considered nonmagnetic materials above the Curie temperature (e) NOA 62)What is the difference between ferromagnetic and ferrimagnetic materials? a) Magnetic moment coupling is parallel for ferromagnetic materials, and antiparallel for ferrimagnetic. b) Ferromagnetic, being metallic materials, are relatively good electrical conductors; inasmuch as ferrimagnetic materials are ceramics, they are electrically insulative. c) Saturation magnetizations are higher for ferromagnetic materials. d) All of the above are correct e) NOA