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Magnetic cooling and susceptibility of MgO: Mn2+ (1970)

Hsu, Y. ; Lamarche, J. L. G. ; Ancsin, J. ; [et al.]

Springer

Journal of low temperature physics 3 (1970), S. 415-427

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ISSN: 1573-7357

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract ESR, paramagnetic susceptibility, and adiabatic demagnetization studies of single crystals of MgO doped with about 0.14 % Mn2+ are presented. The results of the ESR measurements are in good agreement with that obtained by previous investigators on crystals with lower Mn2+ concentration, but the line widths observed are much wider. Also, the line widths are wider by 20 % at 4.2°K than those at room temperature. The paramagnetic susceptibility obeys Curie's law very accurately down to 0.3°K and may be used for thermometry down to 0.1°K. The crystal has a maximum specific heat between 0.03 and 0.04°K. Temperatures well below 0.1°K can be attained by adiabatic demagnetization with a moderate field at 1.3°K.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01435283

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