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SUMMARY:Phase diagram of the perovskite solid solution CaCu$_3$Ti$_{(4-x)}
 $Ru$_{x}$O$_{12}$  elucidated with bulk $\\mu^+$SR
DTSTART;VALUE=DATE-TIME:20220829T164000Z
DTEND;VALUE=DATE-TIME:20220829T170000Z
DTSTAMP;VALUE=DATE-TIME:20220826T110352Z
UID:indico-contribution-3747@indico.stfc.ac.uk
DESCRIPTION:Speakers: Elisabetta Nocerino (KTH Royal Institute of Technolo
 gy)\nThe CaCu$_3$Ti$_{(4-x)}$Ru$_{(x)}$O$_{12}$  family\, synthesized unde
 r high pressure (7.7 GPa) belongs to the perovskite class of materials. Th
 e ground state of the extremes of this solid solution are antiferromagneti
 c insulator for the x = 0 member\, and itinerant-electron system\, i.e.\, 
 Pauli-paramagnetic metal\, for the x = 4 member respectively **[1\,2]**. T
 he suppression of magnetic ordering from the x = 0 to the x = 4 member of 
 the solid solution seems to be accompanied by non-Fermi liquid (NFL) behav
 ior since CaCu$_3$Ti$_4$O$_{12}$ manifested indications of such a behavior
  in heat capacity measurements **[3]**. These features make the solid solu
 tion CaCu$_3$Ti$_{(4-x)}$Ru$_{(x)}$O$_{12}$ a promising candidate for poss
 essing a Doniach-type phase diagram **[4]**. In this work we present the r
 esults of a bulk muon spin rotation study on the intermediate members of t
 he solid solution\, showing the evolution of the magnetic ground state goi
 ng from antiferromagnetic to paramagnetic. Evidence of highly dynamical gr
 ound states are also found among the members of the solid solution and a t
 entative phase diagram as a function of the Ru content x is proposed.\n\n*
 *[1]** A. Collomb\, D. Samaras\, B. Bochu\, and J. C. Joubert\, Physica St
 atus Solidi (a) 41\, 459 (1977)\n**[2]** A. Ramirez\, G. Lawes\, D. Li\, a
 nd M. Subramanian\, Solid State Communications 131\, 251 (2004)\n**[3]** A
 . Krimmel\, A. Gunther\, W. Kraetschmer\, H. Dekinger\, N. Buttgen\, A. Lo
 idl\, S. G. Ebbing-haus\, E.-W. Scheidt\, and W. Scherer\, Phys. Rev. B 78
 \, 165126 (2008).\n**[4]** S. Doniach\, Physica B+C 91\, 231 (1977)\n\nhtt
 ps://indico.stfc.ac.uk/event/53/contributions/3747/
LOCATION:Science and Technology Campus\, University of Parma
URL:https://indico.stfc.ac.uk/event/53/contributions/3747/
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