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Facio, J.I.; Betancourth, D.; Cejas Bolecek, N.R.; Jorge, G.A.; Pedrazzini, P.; Correa, V.F.; Cornaglia, P.S.; Vildosola, V.; García D.J. |
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Lattice specific heat for the RMIn5 (R=Gd, La,Y; M=Co, Rh) compounds: Non-magnetic contribution subtraction |
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2016 |
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Journal of Magnetism and Magnetic Materials |
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J. Magn. Magn. Mater. |
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407 |
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406-4011 |
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BT @ victor.correa @ |
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730 |
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Correa, V.F.; Betancourth, D.; Sereni, J.G.; Caroca-Canales, N.; Geibel, C. |
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Remarkable magnetostructural coupling around the magnetic transition in CeCo0.85Fe0.15Si |
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2016 |
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Journal of Physics: Condensed Matter |
Abbreviated Journal |
J. Phys.: Condens. Matter |
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28 |
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34 |
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346003 |
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magnetostriction, cerium compounds, magnetism |
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We report a detailed study of the magnetic properties of CeCo0.85Fe0.15Si under high magnetic
fields (up to 16 Tesla) measuring different physical properties such as specific heat, magnetization,
electrical resistivity, thermal expansion and magnetostriction. CeCo0.85Fe0.15Si becomes
antiferromagnetic at TN 6.7 K. However, a broad tail (onset at TX 13 K) in the specific heat
precedes that second order transition. This tail is also observed in the temperature derivative of
the resistivity. However, it is particularly noticeable in the thermal expansion coefficient where it
takes the form of a large bump centered at TX. A high magnetic field practically washes out that tail
in the resistivity. But surprisingly, the bump in the thermal expansion coefficient becomes a well
pronounced peak fully split from the magnetic transition at TN. Concurrently, the magnetoresistance
also switches from negative to positive above TN. The magnetostriction is considerable and
irreversible at low temperature ( (16 T) 4×10− L
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4 at 2 K) when the magnetic interactions
dominate. A broad jump in the field dependence of the magnetostriction observed at low T may be
the signature of a weak ongoing metamagnetic transition. Taking altogether the results indicate the
importance of the lattice effects on the development of the magnetic order in these alloys. |
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BT @ victor.correa @ |
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732 |
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Perez, M.; Lipovetzky, J.; Sofo Haro, M.; Sidelnik, I.; Blostein, J.J.; Alcalde Bessia, F.; Gomez Berisso, M. |
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Particle detection and classification using commercial off the shelf CMOS image sensors |
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2016 |
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Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
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Nucl. Instr. Meth. Phys. Res. A |
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827 |
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171-180 |
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Radiation detectors; CMOS image sensors; Alpha Particles; Beta rays; Gamma rays; X-rays; Dosimetry |
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Abstract
In this paper we analyse the response of two different Commercial Off The shelf CMOS image sensors as particle detectors. Sensors were irradiated using X-ray photons, gamma photons, beta particles and alpha particles from diverse sources. The amount of charge produced by different particles, and the size of the spot registered on the sensor are compared, and analysed by an algorithm to classify them. For a known incident energy spectrum, the employed sensors provide a dose resolution lower than microGray, showing their potentials in radioprotection, area monitoring, or medical applications. |
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0168-9002 |
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BT @ pedrazp @ |
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741 |
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