358°C
The Curie temperature is the specific temperature at which certain magnetic materials lose their permanent magnetic properties and become paramagnetic. For ferromagnetic materials like Nickel (Ni), this signifies a phase transition.
The widely recognized value for the Curie temperature ($T_C$) of Nickel metal is approximately 358°C.
This temperature is a fundamental property indicating the limit of Nickel's ferromagnetic behavior under increasing thermal energy.
The substances which are attracted by the magnetic field are
The dimension of ferromagnetic domains is in the order of
Of the following, the most suitable for making permanent magnet is:
The magnetic fields at a distance 'd' from a short bar magnet in longitudinal and transverse positions are in the ratio:
Magnets lose their magnetic properties, when