  The highest antiferromagnetic (AFM) temperature in Ce based compounds has
been reported for CeScGe with Tn=47K, but its local or itinerant nature was not
deeply investigated yet. In order to shed more light into this unusually high
ordering temperature we have investigated structural, magnetic, transport and
thermal properties of CeTi{1-x}Sc{x}Ge alloys within the range of stability of
the CeScSi-type structure: 0.25<x<1. Along this concentration range, this
strongly anisotropic system presents a complex magnetic phase diagram with a
continuous modification of its magnetic behavior, from ferromagnetism (FM)for
0.25<x<0.50 (with 7K<Tc<16K) to AFM for 0.60<x<1 (with 19K<Tn<47K). The onset
of the AFM phase is associated to a metamagnetic transition with a critical
field increasing from H{cr}=0 at x~0.55 to ~6Tesla at x=1, coincident with an
increasing contribution of the first excited crystal electric field doublet. At
a critical point x{cr}=0.65 a second transition appears at Tl<Tn. In contrast
to observations in itinerant systems like CeRh{2}Si{2} or CeRh{3}B{2}, no
evidences for significant hybridization of the 4f electrons at large Sc
contents were found. Therefore, the exceptionally large Tn of CeScGe can be
attributed to an increasing RKKY inter-layer interaction as Sc content grows.
