frustrated magnet

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• Geometrically frustrated magnet — Geometrical frustration and ice rules The word frustration was introduced to describe the situation where a system cannot simultaneously minimize the interaction energies between its components [cite journal last = Schiffer first = P. authorlink …   Wikipedia

• Single-molecule magnet — Single molecule magnets or SMMs are a class of metalorganic compounds, that show superparamagnetic behavior below a certain blocking temperature at the molecular scale. In this temperature range, SMMs exhibit magnetic hysteresis of purely… …   Wikipedia

• Geometrical frustration — is a phenomenon in condensed matter physics in which the geometrical properties of the atomic lattice forbid the existence of a unique ground state, resulting in a nonzero residual entropy. The most important consequence of this is that the… …   Wikipedia

• Spin ice — A spin ice is a material where the behavior of the magnetic moments in the material is analogous to the behavior of the protons in water ice. of ice was expected to be non trivial. [L. Pauling, The Structure and Entropy of Ice and of Other… …   Wikipedia

• Ising model — The Ising model, named after the physicist Ernst Ising, is a mathematical model in statistical mechanics. It has since been used to model diverse phenomena in which bits of information, interacting in pairs, produce collectiveeffects.Definition… …   Wikipedia

• Jarosite — is a basic hydrous sulfate of potassium and iron with a chemical formula of KFe(III)3(OH)6(SO4)2. This mineral is formed in ore deposits by the oxidation of iron sulfides. Jarosite is often produced as a byproduct during the purification and… …   Wikipedia

• Antiferromagnetism — In materials that exhibit antiferromagnetism, the magnetic moments of atoms or molecules, usuallyrelated to the spins of electrons, align in a regular pattern with neighboring spins (on different sublattices) pointing in opposite directions. This …   Wikipedia

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• Magnetic monopole — It is impossible to make magnetic monopoles from a bar magnet. If a bar magnet is cut in half, it is not the case that one half has the north pole and the other half has the south pole. Inst …   Wikipedia

• Desegregation busing in the United States — (also known as forced busing or simply busing) is the practice of assigning and transporting students to schools in such a manner as to redress prior racial segregation of schools, or to overcome the effects of residential segregation on local… …   Wikipedia