magnetocaloric effect वाक्य
उदाहरण वाक्य
मोबाइल
- Since then other alloys have also demonstrated the giant magnetocaloric effect.
- The magnetocaloric effect ( MCE ) is an intrinsic property of a magnetic solid.
- Since then, hundreds of peer-reviewed articles have been written describing materials exhibiting magnetocaloric effects.
- Current research has been used to describe alloys with a significant magnetocaloric effect in terms of a thermodynamic system.
- This giant magnetocaloric effect ( GMCE ) occurred at 270K, which is lower than that of Gd ( 294K ).
- Although the concept is straightforward, researchers have been refining the details, first looking for metals that maximize the magnetocaloric effect.
- One of the most notable examples of the magnetocaloric effect is in the chemical element gadolinium and some of its alloys.
- Gadolinium-based materials, such as Gd 5 ( Si x Ge 1-x ) 4, are currently the most promising materials owing to their high Curie temperature and giant magnetocaloric effect.
- Praseodymium alloyed with nickel ( ) has such a strong magnetocaloric effect that it has allowed scientists to approach to within one milliKelvin, one thousandth of a degree of absolute zero.
- The underlying mechanism of the effect is not fully established; in particular, different textbooks give conflicting explanations . ( The magnetocaloric effect is an analogous, but better-known and understood, phenomenon .)
- A major breakthrough came 2002 when a group at the University of Amsterdam demonstrated the giant magnetocaloric effect in MnFe ( P, As ) alloys that are based on abundant materials.
- Pure Gd itself exhibits a large magnetocaloric effect near its Curie temperature of 20 �C, and this has sparked great interest into producing Gd alloys with a larger effect and tunable Curie temperature.
- Physical Property Measurement System ( PPMS ) enables the measurement of phenomena such as the magnetocaloric effect, magnetostriction and magnetoresistance over a wide range of temperatures at magnetic fields of up to 7 T.
- The development of this technology is very material-dependent and will likely not replace vapor-compression refrigeration without significantly improved materials that are cheap, abundant, and exhibit much larger magnetocaloric effects over a larger range of temperatures.
- The magnetocaloric effect ( MCE, from " magnet " and " calorie " ) is a magneto-thermodynamic phenomenon in which a temperature change of a suitable material is caused by exposing the material to a changing magnetic field.
- Refrigerators based on the magnetocaloric effect have been demonstrated in laboratories, using magnetic fields starting at 0.6 T up to 10 T . Magnetic fields above 2 T are difficult to produce with permanent magnets and are produced by a superconducting magnet ( 1 T is about 20, 000 times the Earth's magnetic field ).
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