نتایج جستجو برای: فرومغناطیس ferro magnetism

تعداد نتایج: 10919  

2013
David J. Singh David Parker

Novel or unusual magnetism is a subject of considerable interest, particularly in metals and degenerate semiconductors. In such materials the interplay of magnetism, transport and other Fermi liquid properties can lead to fascinating physical behavior. One example is in magnetic semiconductors, where spin polarized currents may be controlled and used. We report density functional calculations p...

2000
A. V. Afanasjev P. Ring

Time-odd mean fields in the rotating frame: microscopic nature of nuclear magnetism. Abstract The microscopic role of nuclear magnetism in rotating frame is investigated for the first time in the framework of the cranked relativistic mean field theory. It is shown that nuclear magnetism modifies the expectation values of single-particle spin, orbital and total angular momenta along the rotation...

2015
Aaron Thurber Michael S. Jones Dmitri Tenne Charles B. Hanna Alex Punnoose Jianhui Zhang Shijie Xiong Xinglong Wu Zhongda Pan Dmitri A. Tenne Youwei Du

We demonstrate experimentally that magnetism in ZnO, TiO2, CeO2, and SnO2 nanocrystals (NCs) has a fluctuant nature that varying with capping surfactant type and concentration. By developing a forced hydrolysis approach with additional post-processing for the synthesis and surfactant capping of these NCs, we effectively avoid the influence of size, shape, and magnetic impurities on the magnetic...

Journal: :Optics express 2007
Wenshan Cai Uday K Chettiar Hsiao-Kuan Yuan Vashista C de Silva Alexander V Kildishev Vladimir P Drachev Vladimir M Shalaev

A family of coupled nanostrips with varying dimensions is demonstrated exhibiting optical magnetic responses across the whole visible spectrum, from red to blue. We refer to such a phenomenon as rainbow magnetism. The experimental and analytical studies of such structures provide us with a universal building block and a general recipe for producing controllable optical magnetism for various pra...

2004
A. Delin

We have investigated infinitely long, monostrand Pt nanowires theoretically, and found that they exhibit Hund’s rule magnetism. We find a spin moment of 0.6 μB per atom, at the equilibrium bond length. Its magnetic moment increases with stretching. The origin of the wire magnetism is analyzed and its effect on the conductance through the wire is discussed.

Journal: :علوم باغبانی ایران 0
داریوش رمضان دانشجوی سابق دکتری فیزیولوژی و اصلاح سبزی، دانشکدۀ علوم کشاورزی، دانشگاه گیلان و استادیار، دانشکدۀ کشاورزی، دانشگاه زابل، ایران معظم حسن پور اصیل استاد، دانشکدۀ علوم کشاورزی، دانشگاه گیلان، ایران رضا صالحی استادیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران حسین دهقانی سانیچ دانشیار پژوهش، مؤسسۀ تحقیقات فنی و مهندسی کشاورزی، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران

in this study, a landrace melon zarde jalali as the scion and commercial varieties of cucurbita rootstocks cv., shintozwa and ferro-rz was used as the rootstock. grafted plants upon commercial varieties of cucurbita with own-rooted and ungrafted at three irrigation levels of 60, 80 and 100% (respectively 4984.32, 6124.82 and 7239.41 m3ha-1) based on total available water depletion with drip irr...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2014
Neil D Mathur James F Scott

In 1600, William Gilbert of Colchester published the standard treatise on the difference between magnetism and electricity. He died a few years later, and his analysis was the canon of European thinking on the subject for 300 years. In 1894, Pierre Curie suggested that electricity and magnetism might be coupled in materials, but theoretical and experimental validation only came at the end of th...

In the present study, Thermo-Reactive Deposition method (TRD) in a molten bath was used to form niobium carbide coating on AISI L2 steel. The coating was formed in five different composition of borax (Na2B4O7), boric acid (B2O3), and ferro-niobium. For all of the five compositions of molten bath, niobium carbide coating treatment was carried out at 1173 K, 1273 K, and 1373 K for 2, 4 and 8 hour...

ژورنال: فیزیک کوانتومی 2015

این مقاله، لاگرانژین و معادلاتی که هامیلتونین غیرهایزنبرگی غیرهمسانگرد را توصیف می‌کند، مطالعه شده است. در این تحقیق از حالت‌های همدوس در پارامتر حقیقی و انتگرال مسیر فاینمن در گروه(2)SUاستفاده شده است. این معادلات دینامیک غیرخطی زنجیر فرومغناطیس غیرهایزنبرگی را به طور کامل توصیف می‌کنند. جواب‌های این معادلات سالیتون‌های مغناطیسی هستند (در این مطالعه محاسبه نشده‌اند). این معادلات نشان می‌دهند ک...

Journal: :Nature 1872

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