Low Temperature Physics: 43, 955 (2017); https://doi.org/10.1063/1.5001295
Физика Низких Температур: Том 43, Выпуск 8 (Август 2017), c. 1189-1193    ( к оглавлению , назад )

Magnetic anisotropy in Fe phthalocyanine film deposited on Si(110) substrate: standing configuration

Juan Bartolomé1, Fernando Bartolomé1, Luis Miguel García1, Thomas Gredig2, Ivan K. Schuller3, and Julio C. Cezar4,5

1Instituto de Ciencia de Materiales de Aragón and Departamento de Física de la Materia Condensada, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
E-mail: Barto@unizar.es

2Department of Physics, California State University, Long Beach, CA 90840-9505, USA

3Center for Advanced Nanoscience, Department of Physics, University of California San Diego, la Jolla, CA 92093-0319, USA

4Laboratório Nacional de Luz Síncrotron (LNLS), Campinas (SP), CEP 13083-100, Brasil

5European Synchrotron Radiation Facility (ESRF), Grenoble F380543, France

Received February 24, 2017

Аннотация

In this contribution we report on the structural and magnetic properties of an Fe phthalocyanine (FePc) thin film deposited on a silicon substrate. The planar FePc molecules order spontaneously in a standing configuration, i.e., with the molecular plane perpendicular to the substrate. The x-ray linear polarized absorption and x-ray magnetic circular dichroism experiments at the Fe-L2,3 edges at T = 6 K were performed, concluding that at this temperature the film displays magnetic anisotropy with the main easy axis perpendicular to the substrate. This result is explained in terms of the FePc single molecule anisotropy which has its larger moment in the molecule plane. Thus, the standing configuration in polycrystalline thin films favors statistically that, at the macroscopic array level, the magnetic easy anisotropy axis is normal to the substrate.

PACS: 75.30.Gw Magnetic anisotropy;
PACS: 75.70.–i Magnetic properties of thin films, surfaces, and interfaces;
PACS: 75.75.–c Magnetic properties of nanostructures.

Ключевые слова: phthalocyanine, molecular magnetism, magnetic anisotropy, XMCD.

Published online: June 26, 2017