Editing Magnetometer (section)

===Torque magnetometry===
Magnetic torque magnetometry can be even more sensitive than SQUID magnetometry. However, magnetic torque magnetometry doesn't measure magnetism directly as all the previously mentioned methods do. Magnetic torque magnetometry instead measures the torque τ acting on a sample's magnetic moment μ as a result of a uniform magnetic field B, τ = μ × B. A torque is thus a measure of the sample's magnetic or shape anisotropy. In some cases the sample's magnetization can be extracted from the measured torque. In other cases, the magnetic torque measurement is used to detect magnetic [[phase transition]]s or [[quantum oscillation]]s. The most common way to measure magnetic [[torque]] is to mount the sample on a [[cantilever]] and measure the displacement via [[capacitance]] measurement between the [[cantilever]] and nearby fixed object, or by measuring the [[piezoelectricity]] of the cantilever, or by [[optical interferometry]] off the surface of the cantilever.