To demagnetize a saturated magnet, a certain magnetic field must be applied, and this threshold depends on coercivity of the respective material. Hard materials have high coercivity, whereas soft materials have low coercivity.aterials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called ferromagnetic (or ferrimagnetic). These include iron, nickel, cobalt, some alloys of rare earth metals, and some naturally occurring minerals such as lodestone.
Atahualpa was the last Inca ruler, executed by Spanish conquistador Francisco Pizarro in 1533, marking the end of the Inca empire.orn c. 1502, Atahualpa was the younger son of Inca ruler Huayna Capac. At Huayna's death, the kingdom was divided between his sons. This lead to a bloody civil war, which Atahualpa won in 1532.
Besides, Atahualpa would be a pledge for the peace of his people. The Spanish Pioneers Charles F. Lummis. Atahualpa was not there, but was encamped on the plain, at a distance of a league, with all his people in tents. The Great Events by Famous Historians, Volume 9 Various. Atahualpa was certainly not above curiosity, unconcerned as he had seemed. The Spanish Pioneers Charles F. Lummis.