thermal demagnetization

См. также в других словарях:

• adiabatic demagnetization — ▪ physics       process by which the removal of a magnetic field from certain materials serves to lower their temperature. This procedure, proposed by chemists Peter Debye (Debye, Peter) (1926) and William Francis Giauque (Giauque, William… …   Universalium

• Magnetic refrigeration — Gadolinium alloy heats up inside the magnetic field and loses thermal energy to the environment, so it exits the field cooler than when it entered. Magnetic refrigeration is a cooling technology based on the magnetocaloric effect. This technique… …   Wikipedia

• Entropy (order and disorder) — Boltzmann s molecules (1896) shown at a rest position in a solid In thermodynamics, entropy is commonly associated with the amount of order, disorder, and/or chaos in a thermodynamic system. This stems from Rudolf Clausius 1862 assertion that any …   Wikipedia

• Samarium — promethium ← samarium → europium ↑ Sm ↓ …   Wikipedia

• Order and disorder (physics) — In physics, the terms order and disorder designate the presence or absence of some symmetry or correlation in a many particle system. In condensed matter physics, systems typically are ordered at low temperatures; upon heating, they undergo one… …   Wikipedia

• Hard disk drive — Hard drive redirects here. For other uses, see Hard drive (disambiguation). Hard disk drive Mechanical interior of a modern hard disk drive Date invented 24 December 1954 [1] …   Wikipedia

• Refrigeration — Commercial refrigeration Ice is used to refriger …   Wikipedia

• La Fayette class frigate — The La Fayette class units ( FL 3000 for Frégate Légère de 3,000 tonnes , 3,000 tonnes light frigates , or FLF or Frégate Légère Furtive , Light Stealth Frigate ) are light multi mission frigates built by DCN and operated by France ( Marine… …   Wikipedia

• Samarium-cobalt magnet — Samarium cobalt magnets are primarily composed of samarium and cobalt. They have been available since the early 1970s. This type of rare earth magnet is very powerful, however they are brittle and prone to cracking and chipping. Samarium cobalt… …   Wikipedia

• Natural Remanent Magnetization — (Abbreviated NRM) is the permanent magnetism of a rock. The NRM is frozen into the rock. It does not change with other location.The NRM is stripped away in a stepwise manner using thermal or alternating field demagnetization techniques to reveal… …   Wikipedia

• Magnetostratigraphy — is a geophysical correlation technique used to date sedimentary and volcanic sequences. The method works by collecting oriented samples at measured intervals throughout the section. The samples are analyzed to determine their characteristic… …   Wikipedia