Magnetothermodynamics of Ce2Mg3(NO3)12· 24H2O. I. Heat capacity, entropy, magnetic moment from 0.5 to 4.2°K with fields to 90 kG along the a crystal axis. Heat capacity of Pyrex 7740 glass in fields to 90 kG

摘要: The heat capacity of a 4.023 cm diam spherical single crystal cerium magnesium nitrate hydrate has been measured with stabilized fields 0, 1000, 2500, 5000, 10 000, 15 25 40 65 and 90 000 G along the axis, from 0.5 to 4.2°K. zero electronic entropy was reached at 90, 65, kG lower temperatures. isoerstedic changes derived series were interconnected by 28 temperatures vs on isentropes. Analysis data indicated that first excited doublet is 70.5± 1.0 cal/mole Ce3+ above ground doublet. splitting factor evaluated gH=1.8385−5.20× 10−12H2± 0.001. An applied magnetic field introduces an internal energy change 1.39× 10−15H3 cal/mole (H in gauss) enthalpy separation. moment over same ranges temperature as capacity. Near 0.5°K, range kG, t...