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Towards a Room Temperature Organic Spin Valve: Structural, Magnetic and Transport Properties of Fe3O4/PTCTE/Co Devices

Published online by Cambridge University Press:  17 May 2011

Mathieu Palosse ,
Elena Bedel-Pereira ,
François Olivié ,
Isabelle Séguy ,
Christina Villeneuve ,
Thomas Blon ,
Christophe Gatel ,
Bénédicte Warot-Fonrose  and
Jean-François Bobo
Mathieu Palosse
Affiliation:
LAAS-CNRS, 7 Av. du Colonel Roche, F-31077 Toulouse, France. Université de Toulouse, UPS, INSA, INP, ISAE; LAAS; CEMES, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.
Elena Bedel-Pereira
Affiliation:
LAAS-CNRS, 7 Av. du Colonel Roche, F-31077 Toulouse, France. Université de Toulouse, UPS, INSA, INP, ISAE; LAAS; CEMES, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.
François Olivié
Affiliation:
LAAS-CNRS, 7 Av. du Colonel Roche, F-31077 Toulouse, France. Université de Toulouse, UPS, INSA, INP, ISAE; LAAS; CEMES, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.
Isabelle Séguy
Affiliation:
LAAS-CNRS, 7 Av. du Colonel Roche, F-31077 Toulouse, France. Université de Toulouse, UPS, INSA, INP, ISAE; LAAS; CEMES, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.
Christina Villeneuve
Affiliation:
LAAS-CNRS, 7 Av. du Colonel Roche, F-31077 Toulouse, France. Université de Toulouse, UPS, INSA, INP, ISAE; LAAS; CEMES, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.
Thomas Blon
Affiliation:
LPCNO-INSA, Département de Génie Physique, 135 avenue de Rangueil, 31077 Toulouse Cedex 4, France. Université de Toulouse, UPS, INSA, INP, ISAE; LAAS; CEMES, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.
Christophe Gatel
Affiliation:
CEMES-CNRS, 29 rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France. Université de Toulouse, UPS, INSA, INP, ISAE; LAAS; CEMES, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.
Bénédicte Warot-Fonrose
Affiliation:
CEMES-CNRS, 29 rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France. Université de Toulouse, UPS, INSA, INP, ISAE; LAAS; CEMES, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.
Jean-François Bobo
Affiliation:
CEMES-CNRS, 29 rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France. Université de Toulouse, UPS, INSA, INP, ISAE; LAAS; CEMES, 118 route de Narbonne, 31062 Toulouse Cedex 9, France. GLAM-MSE, Stanford University, Stanford, CA, United States.
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Abstract

This paper describes first steps in preparation of an organic spin valve based on a perylene derivative (PTCTE) sandwiched between magnetite (Fe3O4) and cobalt (Co) ferromagnetic electrodes. MgO(001)/Fe3O4/PTCTE (450 nm)/Co devices were prepared with different Co soft deposition methods: off-axis dc-sputtering or Joule evaporation. Vibrating Sample Magnetometer (VSM) studies of the Fe3O4/PTCTE/Co stacks evidence spin valve behavior with magnetically uncoupled electrodes. These results are correlated with a morphological study by atomic force microscopy (AFM) of each layer and tunneling AFM (TUNA) for the investigation of inhomogeneity of current distribution in the devices. Finally, macroscopic I-V characteristics performed on the same devices will be presented and compared with TUNA results.

Keywords

organicspintronicmagnetic properties
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1359: Symposium NN – Electronic Organic and Inorganic Hybrid Nanomaterials—Synthesis, Device Physics and Their Applications , 2011 , mrss11-1359-nn11-05
Copyright
Copyright © Materials Research Society 2011

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References

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