Martínez-Pérez, M. J. Bellido,E. De Miguel,R. Sesé,J. Lostao,A. Gómez-Moreno,C. Drung,D. Schurig,T. Ruiz-Molina,D. Luis,F. Alternating current magnetic susceptibility of a molecular magnet submonolayer directly patterned onto a micro superconducting quantum interference device Appl. phys. lett. 10.1063/1.3609859 2011 2011