منابع مشابه
Conductivity and switching phenomena in Mn-doped perovskite single crystals and manganite thin films
For better understanding of the charge-transport mechanisms in perovskite manganites, along with colossal magnetoresistance ~CMR! materials, such as La12xSrxMnO3, we study systems with decreased content of Mn ions, such as single crystals of LaGa12xMnxO3 (0,x,0.5). The conductivity of all the systems in study can be described adequately with a nonadiabatic approximation of the hopping model wit...
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We have studied non-Ohmic effects in hopping conduction in moderately compensated ion-implanted Si:P, B both nand p-type and neutron-transmutation-doped Ge:Ga,As over the temperature range 0.05–0.8 K and up to moderately strong electric fields. In the limit of small fields, where the current is proportional to applied voltage, the resistivities of these materials are approximated over a wide te...
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Zn1 - x Mn x O nanoparticles have been synthesized by hydrothermal technique. The doping concentration of Mn can reach up to 9 at% without precipitation or secondary phase, confirmed by electron spin resonance (ESR) and synchrotron X-ray diffraction (XRD). Room-temperature ferromagnetism is observed in the as-prepared nanoparticles. However, the room-temperature ferromagnetism disappears after ...
متن کاملMagnetization in electron- and Mn- doped SrTiO3
Mn-doped SrTiO(3.0), when synthesized free of impurities, is a paramagnetic insulator with interesting dielectric properties. Since delocalized charge carriers are known to promote ferromagnetism in a large number of systems via diverse mechanisms, we have looked for the possibility of any intrinsic, spontaneous magnetization by simultaneous doping of Mn ions and electrons into SrTiO3 via oxyge...
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ژورنال
عنوان ژورنال: physica status solidi (a)
سال: 2012
ISSN: 1862-6300
DOI: 10.1002/pssa.201228384