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Wyszukujesz frazę "Yang, H. S." wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Zero-Bias Anomaly in Magnetic Tunnel Junctions
    Autorzy:
    Yang, H.
    Yang, S.
    Ilnicki, G.
    Martinek, J.
    Parkin, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1536909.pdf
    Data publikacji:
    2010-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.21.La
    73.23.-b
    73.22.-f
    Opis:
    We present experimental results, which may indicate the possibility of the coexistence of the Kondo effect and ferromagnetism in macroscopic planar magnetic tunnel junctions with a layer of nanodots inside tunnel barriers. A conductance double peak structure was observed. Magnetic field dependence of the splitting of a conductance peak, and temperature evolution of the conductance curves are well explained from the theoretical point of view according to the predictions of the Kondo physics and cotunneling in the Anderson quantum dot coupled to ferromagnetic leads.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 2; 316-318
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Preparation and Microstructure of Semi-Solid 7075 Alloy Slurry
    Autorzy:
    Gan, G.
    Yang, B.
    Bei, S.
    Mei, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1418959.pdf
    Data publikacji:
    2012-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Bx
    82.40.-g
    98.20.Gm
    Opis:
    A novel technique, with which in situ $TiB_2$ particles and serpentine channels are introduced to prepare wrought aluminum alloy with higher strength, has been successfully applied to produce semi-solid 7075 alloy slurry. The effects of in situ $TiB_2$ particles and serpentine channels on the microstructure of the 7075 alloy including the grain growth behavior in the semi-solid state of the 7075 alloy were investigated. The experimental results showed that the in situ $TiB_2$ particles and serpentine channels are beneficial to increase the number of solidification nuclei and to promote uniform distribution of α-Al nuclei. As a result, the semi-solid 7075 alloy slurry with globular-like grains has been successfully produced.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 3; 565-568
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Surface Characteristics and Physical Properties on Biodegradable Magnesium-Calcium Alloys by Anodic Oxidation
    Autorzy:
    Kim, J.
    Lee, J.
    Yang, H.
    Park, S.
    Lim, H.
    Oh, G.
    Yun, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1191716.pdf
    Data publikacji:
    2016-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.85.jj
    87.85.jc
    Opis:
    The purpose of this study was to determine the effect of calcium (Ca) on the surface characteristics and physical properties of magnesium-calcium alloys after anodization. A novel binary alloy Mg-xCa (in which x=0.5, 1, or 5 wt.%) was cast by combining magnesium (99.9%) and calcium (99.9%) in an argon gas (99.99%) atmosphere. A magnesium alloy rod having a diameter of 15 mm was cut into discs, each 2 mm thick. The specimens were subjected to anodic oxidation at 120 V for 15 minutes at room temperature in an electrolyte solution consisting of calcium gluconate, sodium hexametaphosphate, and sodium hydroxide. Surface and cross-sectional morphological changes were observed using scanning electron microscopy, and the microstructures and phases were detected by means of X-ray diffraction. Hardness and surface roughness were assessed by means of a Vickers hardness tester and a surface roughness meter, respectively. The results show that the physical properties of these magnesium-calcium alloys have been improved, because it was possible to control the dissolution rate according to the amount of calcium added.
    Źródło:
    Acta Physica Polonica A; 2016, 129, 4; 736-741
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of Strain in II-VI Semiconductor Superlattices Using Electron Paramagnetic Resonance of Mn$\text{}^{++}$
    Autorzy:
    Furdyna, J. K.
    Qazzaz, M.
    Yang, G.
    Montes, L.
    Xin, S. H.
    Luo, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1933687.pdf
    Data publikacji:
    1995-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.66.-w
    71.55.Gs
    Opis:
    We explore the possibility of using electron paramagnetic resonance (EPR) of Mn$\text{}^{++}$ for measuring uniaxial strain in II-VI superlattices. This work is motivated by the fact that the EPR spectrum of Mn$\text{}^{++}$ is very strongly affected by crystalline fields. Changes in a crystalline field which arise from strain are thus automatically expected to have a profound effect on the EPR spectrum. Consistent with this expectation, we have observed giant crystal field splittings of Mn$\text{}^{++}$ EPR lines in ZnTe/MnTe, CdTe/MnTe, and ZnTe/MnSe superlattices. The EPR spectra observed in these systems are ascribed to isolated Mn$\text{}^{++}$ ions diffused into the ZnTe or the CdTe layers from the respective MnTe or MnSe layers. In addition to providing precise information oii the magnitude and the sign of strain produced by lattice mismatch between the superlattice constituents, we show that the EPR spectrum also provides a direct measure of strain fluctuations in the layered medium.
    Źródło:
    Acta Physica Polonica A; 1995, 88, 4; 607-618
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental Studies on Charging Operation of a Compact Repetitive Tesla Transformer
    Autorzy:
    Zhang, Z.
    Zhang, J.
    Yang, H.
    Qian, B.
    Meng, Z.
    Li, D.
    Wang, S.
    Cao, Y.
    Zhou, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807860.pdf
    Data publikacji:
    2009-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    84.30.Ng
    84.30.Jc
    84.30.Qi
    84.70.+p
    Opis:
    Charging operations of a compact Tesla transformer were experimentally investigated, in single-shot and rep-rate (50 pps for 1 s) modes, respectively. The charging limitations were also explored. The experimental results were compared and analyzed. The maximum secondary charging voltages of the Tesla transformer were measured to be 380 kV and 300 kV in single-shot and rep-rate modes, respectively. The RMS pulse-to-pulse instability of the secondary charging voltage is generally less than 10% but increases with the increasing initial voltage across the primary capacitor. Since the secondary capacitor of the Tesla transformer is a pulse forming line (PFL), continued operation is possible if there is breakdown in the PFL. Furthermore, operation can even be continued under occasional breakdown for some pulses, without the effects on the operations of subsequent pulses.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 6; 973-975
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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