FLUCTUATION EFFECTS IN SPECIFIC-HEAT AND MAGNETIZATION OF C-AXIS ALIGNED (BI,PB)(2)SR2CA2CU3OX

The specific heat and magnetization of a c-axis aligned (Bi,Pb)(2)Sr2Ca2Cu3Ox bulk sample have been measured in magnetic fields up to 50 kOe. The normalized electronic specific heat Delta C/Delta C-MF,where Delta C-MF is a mean-field specific-heat jump, as well as the magnetization M(T,H)/(TH)(1/2) can be cast into a universal curve with variable [T-T-c(H)]/(TH)(1/2), where T-c(H) is the mean-field transition temperature. This means that the influence of the superconducting fluctuations on the thermodynamic properties of the Bi2Sr2Ca2Cu3O(x) system is described by two-dimensional scaling functions. The scaling behaviors are discussed on the basis of the Ginzburg-Landau fluctuation theory for a quasi-two-dimensional system.