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We report on the interfacial magnetic coupling in manganite bilayers of collinear ferromagnetic La 0.7 Sr 0.3 MnO 3 and noncollinear multiferroic TbMnO 3. Exchange bias is observed at the Néel temperature of TbMnO 3 (,41 K) due to the onset of long-range antiferromagnetic ordering in the Mn spin sublattice. Interestingly, an anomalous plateau of exchange(More)
Magnetic transport properties in Ti(1-x)Co(x)O(2) and Zn(1-x)Co(x)O magnetic semiconductors have been studied experimentally and theoretically. A linear relation of lnρ versus T(-1/2) (ρ is sheet resistance and T is temperature), which shows different slopes and intersections at different magnetic fields, was observed experimentally in the low temperature(More)
Transformation of the electrical transport from the Efros and Shklovskii ͓J. Phys. C 8, L49 ͑1975͔͒ variable range hopping to the " hard gap " resistance was experimentally observed in a low temperature range as the Fe compositions in Zn 1−x Fe x O 1−v ferromagnetic semiconductor films increase. A universal form of the resistance versus temperature, i.e., ␳(More)
In contact lithography it is hard to fabricate microstructures with high precision and high aspect ratio due to diffraction. In this paper, patter transfer error of certain deep layer in SU-8 deep UV lithography will be corrected based on the model-area based correction method .The algorithm reduces the complexity and improves the efficiency of correction.
In this paper, Dill's classical exposure model for positive photoresist is generalized to fit negative photoresist. Based on Dill's model, the differences between positive and negative photoresist is analyzed and then the equations of chemical kinetics inside the SU-8 negative photoresist are established. To consider the scattering and refraction of light(More)
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