Home › AP EAPCET (Engineering) › Physics › Magnetism and Matter › Which feature keeps the magnetic moments of a fe…
Which feature keeps the magnetic moments of a ferromagnet aligned against thermal disorder?
AGravitational pull
BExchange interactions
CElectrostatic screening
DNuclear binding forces
Answer & Solution
Correct answer: B. Exchange interactions
Exchange interactions favour parallel alignment of neighbouring moments, which resists thermal disorder below the Curie point.
Related questions
Magnetic moments cancel and no Curie temperature exists when all electrons in a material aWhat is true of moments in a paramagnet with no applied field?Which kind of atoms give rise to paramagnetism?A ferromagnet turns paramagnetic when heated to a temperature that isThe transition between antiferromagnetic and paramagnetic states occurs at which temperatuWhat does heating do to the alignment of moments in a ferromagnet?Which contribution dominates the magnetic moment of an atom?Who showed in 1895 that a magnet loses its magnetism at a critical temperature?