http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Hybrid magnetic anisotropy <i>[Co/Ni]<sub>15</sub> </i>/<i>Cu/[Co/Pt]<sub>4</sub> </i> spin-valves
Kolesnikov, A.G.,Wu, Hao,Stebliy, M.E.,Ognev, A.V.,Chebotkevich, L.A.,Samardak, A.S.,Han, Xiufeng Elsevier 2018 Journal of magnetism and magnetic materials Vol.449 No.-
<P><B>Abstract</B></P> <P>Thin film multilayer heterostructures consisting of two magnetically coupled stacks, one with in-plane and the second one with out-of-plane magnetic anisotropies, are very promising hybrid magnetic anisotropy materials for spintronics. Here we present results on magnetic and magnetoresistance properties of <I>[Co/Ni]<SUB>15</SUB> </I> (in-plane)/<I>Cu/[Co/Pt]<SUB>4</SUB> </I> (out-of-plane) spin-valves with hybrid magnetic anisotropy. We demonstrate that the saturation field and magnetoresistance depend on the thickness of the copper interlayer (<I>t<SUB>Cu</SUB> </I>) and they have peak values at <I>t<SUB>Cu</SUB> </I> = 2.5 nm, where the antiferromagnetic coupling is maximum. We reveal that an indirect exchange coupling between <I>[Co/Ni]<SUB>n</SUB> </I> and <I>[Co/Pt]<SUB>m</SUB> </I> stacks decreases the magnetization switching fields making these systems suitable for low-field sensor, spin torque oscillator and bit patterned media applications.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Hybrid anisotropy spin-valves (HAS) were systematically studied. </LI> <LI> HAS with AFM coupling have peak values of <I>H<SUB>s</SUB> </I> and <I>MR</I>. </LI> <LI> Simulated M-H and MR loops correctly describe the experimental data. </LI> <LI> AFM coupled HAS have the increased field ranges and linear dependence of MR. </LI> </UL> </P>
Kolesnikov, A.G.,Samardak, A.S.,Stebliy, M.E.,Ognev, A.V.,Chebotkevich, L.A.,Sadovnikov, A.V.,Nikitov, S.A.,Kim, Y.J.,Cha, I.H.,Kim, Y.K. North-Holland Pub. Co 2017 Journal of magnetism and magnetic materials Vol.429 No.-
One of the major societal challenges is reducing the power consumption of information technology (IT) devices and numerous data centers. Distinct from the current approaches based on switching of magnetic single-domain nanostructures or on movement of domain walls under high currents, an original magnetic skyrmion technology offers ultra-low power, fast, high-density, and scalable spintronic devices, including non-volatile random access memory. Using data-driven micromagnetic simulations, we demonstrate the possibility of spontaneous nucleation and stabilization of different skyrmionic states, such as skyrmions, merons, and meron-like configurations, in heavy metal/ferromagnetic nanodisks with the interfacial Dzyaloshinskii-Moriya interaction (iDMI) as a result of quasi-static magnetization reversal only. Since iDMI is not easily modulated in real systems, we show that skyrmion stabilization is easily achievable by manipulating magnetic anisotropy, saturation magnetization, and the diameters of nanodisks. The state diagrams, presented in terms of the topological charge, allow to explicitly distinguish the intermediate states between skyrmions and merons and can be used for developing a skyrmionic medium, which has been recently proposed to be a building block for future spin-orbitronic devices.
Associative conformal algebras with finite faithful representation
Elsevier 2006 Advances in mathematics Vol.202 No.2
<P><B>Abstract</B></P><P>The classification of irreducible subalgebras of the associative conformal algebra <SUB>CendN</SUB> is presented in this paper. The structure theory of associative conformal algebras with finite faithful representation is developed.</P>
Simple associative conformal algebras of linear growth
Elsevier 2006 Journal of algebra Vol.295 No.1
<P><B>Abstract</B></P><P>We describe simple finitely generated associative conformal algebras of Gel'fand–Kirillov dimension one.</P>
Homology groups of types in stable theories and the Hurewicz correspondence
Goodrick, J.,Kim, B.,Kolesnikov, A. North-Holland ; Elsevier Science Ltd 2017 Annals of pure and applied logic Vol.168 No.9
<P>We give an explicit description of the homology group H-n(p) of a strong type p in any stable theory under the assumption that for every non-forking extension q of p the groups H-i(q) are trivial for 2 <= i < n. The group H-n(p) turns out to be isomorphic to the automorphism group of a certain part of the algebraic closure of n independent realizations of p; it follows from the authors' earlier work that such a group must be abelian. We call this the 'Hurewicz correspondence' by analogy with the Hurewicz Theorem in algebraic topology. (c) 2017 Elsevier B.V. All rights reserved.</P>
Manab Kundu,Gopalu Karunakaran,Evgeny Kolesnikov,Voynova Elena Sergeevna,Shilpa Kumari,Mikhail V. Gorshenkov,Denis Kuznetsov 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.59 No.-
The hollow NiCo2O4 nano-spheres (∼300–500 nm) are synthesized by ultrasonic spray pyrolysis method and used as electrode for high-performance supercapacitor (SC) and lithium-ion battery (LIB). When used in SC application, the hollow NiCo2O4 deliver a specific capacitance of ∼1000 F g−1 even after 3000 charge–discharge cycles. In addition, as an anode material for LIBs, it exhibits admirable high capacity values of 763 and 516 mA h g−1 after 1000 cycles at a current density of 1500 and 3000 mAh g−1, respectively. The excellent electrochemical performance of this hollow NiCo2O4 nano-sphere indicates its potential applications for next generation SCs and LIBs.
Magnetic interactions in PdCrO2 and their effects on its magnetic structure
Le, Manh Duc,Jeon, Seyyoung,Kolesnikov, A. I.,Voneshen, D. J.,Gibbs, A. S.,Kim, Jun Sung,Jeong, Jinwon,Noh, Han-Jin,Park, Changhwi,Yu, Jaejun,Perring, T. G.,Park, Je-Geun American Physical Society 2018 Physical Review B Vol.98 No.2