In a technique named for its use of this process, liquid helium is used to keep a sample at a constant temperature and then removed right before this process occurs isentropically, reducing the internal energy and temperature of the sample.
In a technique named for its use of this process, liquid helium is used to keep a sample at a constant temperature and then removed right before this process occurs isentropically, reducing the internal energy and temperature of the sample. The portion of a BÂ–H graph, or hysteresis loop, in the second quadrant is sometimes known as this phenomenon's curve. The last stages of cooling a sample to the microkelvin or picokelvin range involves the "nuclear" and "adiabatic" types of this process. A measure of the ability to resist this process is coercivity. For 10 points, name this process that one might perform by slowly removing a ferromagnet from a coil of wire that has alternating current flowing through it, or by heating a ferromagnet above the Curie temperature.
In a technique named for its use of this process, liquid helium is used to keep a sample at a constant temperature and then removed right before this process occurs isentropically, reducing the internal energy and temperature of the sample.
demagnetization [or adiabatic demagnetization; or nuclear demagnetization]