Research is reported on the properties of magnetic phase transitions. A survey was made of experiments were suggested which should be useful in their study: and several of these experiments were performed on the spin flop transition in antiferromagnetic CuCl2.2H2O. The components were measured of the susceptibility tensor relating to the perpendicular magnetization and obtained data in approximate agreement with a theoretical analysis based on the molecular field approximation. Research ...
As part of a study of the dynamic properties of phase transition of ordered magnetic states, experiments have been performed that involve measuring the susceptibility of magnetic materials as the applied magnetic field is varied about a value for a critical phase tran sition to occur. This measurement technique has suggested a new thermal detector that, on the basis of preliminary calculations, promises to have an excellent NEP(10 to the ...
The relaxation time associated with the spin-flopping transition in CuC12. 2H2O has been measured by an r. f. susceptibility technique and found to be (0. 70 =0. 15) x10 to the minus 7th power seconds at 2.4K. We believe this to be the first such measurement on an order-order transition. Our preliminary measurements also yield the temperature dependence of the critical field, H sub c, in good agreement with previous ...
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