Question

above curie temperature the hysteresis loop of ferroelectric material merges into a

Answer 1

In the curve for saturation magnetization v/s temperature for ferro and ferrimagnetic materials it is shown that at curie temperature saturation magnetization become zero and above that it becomes paramagnetic. 

Answer 2

Above the Curie temperature, the hysteresis loop of a ferroelectric material merges into a cycloid.

• Curie temperature is generally defined as the temperature at which the ferromagnetic materials become paramagnetic.
• Curie temperature was initially measured by Pierre Curie.

• In mathematical geometry, a cycloid is the curve traced by a point on a circle as it rolls along a straight line without slipping.
• A cycloid is a specific form of trochoid and it is an example of a roulette, a curve generated by a curve rolling on another curve.

• The cycloid is the curve of fastest descent under uniform gravity with the cusps pointing upward.
• It is in form of a curve for which the period of an object in simple harmonic motion (rolling up and down repetitively) along the curve does not depend on the object's starting position.

#SPJ3