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Tag: 2013

Thesis Defense: Patricia de Coux “Integration of ferrimagnetic CoFe2O4 epitaxial films with silicon”

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September 30, 2013,
Patricia de Coux successfully defended successfully her PhD thesis.
Title: “Integration of ferrimagnetic CoFe2O4 epitaxial films with silicon”
Supervisors: Dr. Bénédicte Warot-Fonrose (CEMES-CNRS) and Dr. Florencio Sánchez (ICMAB-CSIC)

Liu Fanmao

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Master degree of Materials Science and Engineering in Beihang University.

Phd student 2013 – 2017 under the supervision of Prof. Josep Fontcuberta. 

He starts his professional carrier at  SUN YAT-SEN UNIVERSITY in Guangzhou (China)

Muhammad Awais

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Student of Material sciences and Engineering (Major:Manufacturing) at Ghulam Ishaq Khan Institute of Engineering Sciences and Technology Kpk, Pakistan. Under supervision of  Dr.Gervasi Herranz for two months during 2013.

Regular Lecture of Josep Fontcuberta at MAMA-Trends: Trends, challenges and emergent new phenomena in multi-functional materials

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Phase coexistence and magnetically-tuneable polarization in cycloidal multiferroic

Authors: I. Fina, V. Skumryev, D.O’Flynn, G. Balakrishnan, J. Fontcuberta

Sorrento, Italy, May 20-23, 2013

 

Regular Lecture of J. Fontcuberta at MAMA-Trends: Trends, challenges and emergent new phenomena in multi-functional materials

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Electron distribution among 3d-eg orbitals in manganite thin films

Authors: D. Pesquera, F. Sánchez, G. Herranz, Barla, E. Pellegrin, F. Bondino,  E. Magnano and  Josep Fontcuberta.

Sorrento, Italy, May 20-23, 2013

 

Invited Lecture of Josep Fontcuberta at X- LAW3M: X – LatinAmerican Workshop on Magnetism, Magnetic Materials and Their Applications

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Orbital and electronic reconstructions at the surfaces and interfaces of transition metal oxides

Authors: D. Pesquera, N. Dix, M. Scijal, E. Pellegrin, A. Barla, F. Bondino, E. Magnano, F. Sánchez, G. Herranz and J. Fontcuberta

Buenos Aires, Argentina, April 8-12, 2013

 

Conference of Dr. Fabio Miletto Granozio del CNR-SPIN Institute, Naples, Italy at ICMAB

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26 d’abril, a les 15:00 hores, ICMAB, Sala d’Actes.

Electrostatics and photoresponse of 2D electron gases in oxide interfaces.

Fabio Miletto Granozio, Umberto Scotti di Uccio, Carmela Aruta, Emiliano Di Gennaro, CNR-SPIN, Complesso Universitario di Monte Sant’Angelo, via Cintia 80126 Napoli, Italy.

The properties of the 2DEGs found at the LaAlO3/SrTiO3, LaGaO3/SrTiO3 and NdGaO3/SrTiO3 interfaces are addressed and compared.

An analysis of atomic displacements and of EEL spectra collected at the Ti L and the O K-edge allows us to estimate the lattice polarization P(z) and the valence state of Ti as a function of the z coordinate across the interface [1]. Our variable wavelength photoconductivity data [2] show a very peculiar response to light common to all polar-nonpolar interfaces. Our interfaces show a persistent photoresponse under both UV (i.e., above STO gap) and visible light. We argue that different absorption mechanisms are at play in the two different cases.

An electrostatic analysis based on our P(z) data allows us to estimate the electric displacement vector D(z), the charge distribution, and the possible location of the electron and hole populations under light irradiation. The data are discussed in the light of the unending debate on the origin of the 2DEG in oxide interfaces.

[1] C. Cantoni et al., Advanced Materials (2012) DOI: 10.1002/adma.201200667

[2] E. Di Gennaro et al., Advanced Optical Materials, (2013) submitted; U. Scotti di Uccio et al, arXiv:1206.5083v1;