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Abstract:
V-51 nuclear magnetic resonance (NMR) and magnetization studies on CeTi1-xVxGe3 have been performed to explore the evolution from the ferromagnetic (x = 0.113) to the antiferromagnetic Kondo lattice state (x = 1), with focus on the emergence of a possible ferromagnetic quantum critical point (FMQCP) at x(c) approximate to 0.4. From the temperature dependence of the nuclear spin-lattice relaxation rate, 1/T1T, and the Knight shift, K, for x = 0.113 and x = 1 a considerable competition between ferro- and antiferromagnetic correlations is found. Around the critical concentration (x = 0.35, 0.405), quantum-critical spin fluctuations entail weak antiferromagnetic spin fluctuations admixed with ferromagnetic spin fluctuations. The FMQCP in CeTi1-xVxGe3 therefore is not purely ferromagnetic in nature.
