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- Universidade Estadual de Campinas (UNICAMP)BR15 papers
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8 papers · 1 filter
Photodissociation of organic molecules in star-forming regions, III. Methanol
S. Pilling, R. Neves, A. C. F. Santos +1
The presence of methyl alcohol or methanol (CHOH) in several astrophysical environments has been characterized by its high abundance that depends on both the production rate an…
Ionisation and dissociation of cometary gaseous organic molecules by solar wind particles I: Formic Acid
S. Pilling, A. C. F. Santos, W. Wolff +5
In order to simulate the effects of energetic charged particles present in the solar wind colliding with the cometary gaseous formic acid molecule (HCOOH), laboratory experiments h…
Magnetic structure and critical behavior of GdRhIn: resonant x-ray diffraction and renormalization group analysis
E. Granado, B. Uchoa, A. Malachias +3
The magnetic structure and fluctuations of tetragonal GdRhIn5 were studied by resonant x-ray diffraction at the Gd LII and LIII edges, followed by a renormalization group analysis…
Fluctuation induced first-order phase transitions in a dipolar Ising ferromagnet slab
Rafael M. Fernandes, Harry Westfahl
We investigate the competition between the dipolar and the exchange interaction in a ferromagnetic slab with finite thickness and finite width. From an analytical approximate expre…
Magnetic reconfiguration of MnAs/GaAs(001) observed by Magnetic Force Microscopy and Resonant Soft X-ray Scattering
L. N. Coelho, R. Magalhães-Paniago, B. R. A. Neves +7
We investigated the thermal evolution of the magnetic properties of MnAs epitaxial films grown on GaAs(001) during the coexistence of hexagonal/orthorhombic phases using polarized…
Domain wall formation and spin reorientation in finite-size magnetic systems
Rafael M. Fernandes, Harry Westfahl, Rogério Magalhães-Paniago +1
We investigate the formation of stable one-dimensional Néel walls in a ferromagnetic slab with finite thickness and finite width. Taking into account the dipolar, the exchange and…