Magnetic properties of Co2TiGa compound

The precise magnetization measurement under ambient pressure has been made for Co2TiGa using a SQUID magnetometer. The spontaneous magnetization sigma (s)(T) at ambient pressure is expressed empirically as a function of tempe rature as sigma (s)(T)(2)=sigma (s)(0)(2)(1-T-2/T-C(2)), where sigma (s)(0) and T-c are 19.5 emu/g, 128 K, respectively. The pressure derivative of T- c has been obtained from the results of temperature dependence of initial p ermeability under pressure up to 11 kbar. The value of partial derivativeT( c)/partial derivativeP is -1.27 K/kbar. The results are discussed on the ba sis of the spin fluctuation theory for itinerant electron magnetism. (C) 20 01 Elsevier Science B.V. All rights reserved.