Nonadiabatic heat-capacity measurements using a superconducting quantum interference device magnetometer | Zendy

A. I. Kharkovski | Zendy; Ch. Binek | Zendy; W. Kleemann | Zendy

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Nonadiabatic heat-capacity measurements using a superconducting quantum interference device magnetometer

Author(s) -

A. I. Kharkovski,

Ch. Binek,

W. Kleemann

Publication year - 2000

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1316769

Subject(s) - magnetometer , heat capacity , magnetization , condensed matter physics , superconductivity , relaxation (psychology) , interference (communication) , materials science , laser , calorimetry , magnetic moment , quantum , magnetic field , physics , optics , thermodynamics , quantum mechanics , psychology , social psychology , channel (broadcasting) , engineering , electrical engineering

Nonadiabatic measurements of the heat capacity involving sample-inherent thermometry are proposed. The method is realized with superconducting quantum interference device magnetometry and applied to FeBr2 single crystals by using the magnetization for both thermometry and relaxation calorimetry. When heating with a step pulse of laser light, the magnetization relaxes on a characteristic time scale τ=RC, where C is the heat capacity and R is the heat resistance between the sample and the bath. R is independently determined from the temperature dependence of the magnetic moment measured with and without stationary light irradiation.

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