Prof. José António Paixão

CFisUC, Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal

Prof. José António Paixão

CFisUC, Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal

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Academic Career Length

38Years (1989-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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7 February 2020 in Science

Journal Article

Room temperature magnetoelectric coupling in a molecular ferroelectric ytterbium(III) complex

Jean-Marc Thibaud

Major-league magnetostriction: Magnetoelectric materials polarize in response to either electric or magnetic fields, making them attractive for data-storage applications. Long et al. discovered a ytterbium-based molecular magnetoelectric material with high magnetoelectric coupling (see the Perspective by Zhou and Han). An applied magnetic field strains the material, which changes its electrical properties. The required field is much lower than other magnetoelectric materials, and this work highlights the potential for using molecular materials in devices. Science , this issue p. 671 ; see also p. 627

15 October 2002 in Physical Review Letters

Journal Article

Triple-

\vec{q}

Octupolar Ordering in

{N p O}_{2}

M. J. Longfield

G. H. Lander

We report the results of resonant x-ray scattering experiments performed at the Np

M_{4, 5}

edges in

N p O_{2}

. Below

T_{0} = 25 K

, the development of long-range order of Np electric quadrupoles is revealed by the growth of superlattice Bragg peaks. The polarization and azimuthal dependence of the intensity of the resonant peaks are well reproduced assuming anisotropic tensor susceptibility scattering from a triple-

\vec{q}

longitudinal antiferroquadrupolar structure. Electric-quadrupole order in

N p O_{2}

could be driven by the ordering at

T_{0}

of magnetic octupoles of

Γ_{5}

symmetry, splitting the Np ground state quartet and leading to a singlet ground state with zero dipole-magnetic moment.

1 March 2010 in Scripta Materialia

Journal Article

Effect of Sm substitution on ferroelectric and magnetic properties of BiFeO3

W. Kleemann

1 May 2003 in Tetrahedron Letters

Journal Article

One-step synthesis of dipyrromethanes in water

Abilio Sobral

Nuno G.C.L Rebanda

Melo da Silva

Sandra H Lampreia

M Ramos Silva

António M.D'A Rocha Gonsalves

1 October 2010 in Journal of Applied Physics

Journal Article

Rhombohedral-to-orthorhombic transition and multiferroic properties of Dy-substituted BiFeO3

Investigation of crystal structure, ferroelectric, and magnetic properties of polycrystalline

{Bi}_{1 - x} {Dy}_{x} {FeO}_{3}

(0.1 \leq x \leq 0.2)

samples was carried out. X-ray diffraction study revealed composition-driven rhombohedral-to-orthorhombic

R 3 c \to P n m a

phase transition at

x \sim 0.15

. Both structural phases were found to coexist in a broad concentration range. Piezoresponse force microscopy found suppression of the parent ferroelectric phase upon dysprosium substitution. Magnetometric study confirmed that the

A

-site doping induces appearance of a weak ferromagnetic behavior. Both the ferroelectric and magnetic properties were shown to correlate with a structural evolution.

1 February 2007 in Journal of Porphyrins and Phthalocyanines

Journal Article

Microwave-assisted synthesis of porphyrins and metalloporphyrins: a rapid and efficient synthetic method

Bruno F. O. Nascimento

Marta Pineiro

António M. D'A. Rocha Gonsalves

Manuela Ramos Silva

Ana Matos Beja

José António Paixão

About Me

Prof. Dr. José António Paixão completed the Habilitation in Physics (Titulo de Agregado em Física) in 2003 by Universidade de Coimbra, PhD in Physics in 1994 by Universidade de Coimbra, Faculdade de Ciências e Tecnologia and Licenciatura in Physics in 1987 by Universidade de Coimbra, Faculdade de Ciências e Tecnologia. He is a Full Professor at Universidade de Coimbra Departamento de Física, Director of Centro de Física da Universidade de Coimbra and President of the Portuguese Physical Society. Prof. Dr. José António Paixão's primary research interests include Condensed Matter Physics, Physical Chemistry, Magnetic and Multifunctional Materials, Crystallography, X-Ray, and Neutron Scattering.

Prof. José António Paixão

Prof. José António Paixão

Research Focus & Metrics

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About Me