Materials Literature
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The magnetoelectric (ME) coupling of CoFeB/Ru/CoFeB synthetic antiferromagnetic (SAF) structure is studied at room-temperature when the SAF structure was deposited on the (011)-Pb(Mg1/3Nb2/3)O3-PbTiO3 piezoelectric substrate. It was found that the magnetoelectric coupling showed butterfly like curve when measured in t…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Zhiyun Zhao, Xuechao Zhai, Guojun Jin; Bipolar-unipolar transition in thermospin transport throug…
The optical and structural properties of Li-doped ZnO nanowires grown by a hydrothermal method are reported herein. The low-temperature and temperature-dependent photoluminescence spectra clearly exhibited emission peaks that confirmed the presence of a lithium impurity as an acceptor dopant. Particularly, the accepto…
The ITO films were deposited on polyethylenenaphthalate at the room temperature using dc magnetron sputtering system with Ar ion-beam assist. The dc sputtering power was maintained at 200 W, and the Ar ion-beam power was varied from 20 to 70 W. The change in the resistance of the ITO films in the cyclic bending tests…
Two different Sr 2 SiO 4 : Dy 3+ phosphors were successfully synthesized at 1000°C for 4 h using NH 4 Cl or SrCl 2 as the flux, respectively. The luminescence intensity of Sr 2 SiO 4 : Dy 3+ was enhanced 60 times by the addition of 5 wt% NH 4 Cl . The phase evolution and photoluminescence (PL) properties of the phosph…
We address a quandary associated with the phase stability of NiTi. The B19′ (monoclinic lattice) has been experimentally observed while B33 (base-centered orthorhombic lattice) has been proposed on theoretical grounds to have a lower energy. With high-resolution shearing steps, we show unequivocally that a significant…
Ho3+/Yb3+/Tm3+ tridoped LiNbO3 single crystal exhibiting intense upconversion white light under 980 nm excitation has been successfully fabricated by the Czochralski method. The tridoped LiNbO3 single crystal offers power dependent color tuning properties by simply changing excitation power. Efficient three-photon blu…
The thermally induced spin-state transition of Co${}^{3+}$ ions in the cobaltite LaCoO${}_{3}$, found at temperatures in the range 40 to 120 K, has been the subject of extensive experimental and theoretical investigation. Much less is known about what happens to the spin-state transition in hole-doped La${}_{1\ensurem…
We theoretically demonstrate unusual features of superconducting proximity effect in gapped graphene that presents a pseudospin symmetry-broken ferromagnet with a net pseudomagnetization. We find that the presence of a band gap makes the Andreev conductance of graphene superconductor/pseudoferromagnet (S/PF) junction…
Graphene is an atomic thin two-dimensional semimetal whereas ZnO is a direct wide band gap semiconductor with a strong light-emitting ability. In this paper, we report on photoluminescence (PL) of ZnO-nanowires (NWs)-core/Graphene-shell heterostructures, which shows a negative thermal quenching (NTQ) behavior both for…
Zr, Nb, and Ta as alloying elements for Ti alloys are important for attaining superior corrosion resistance and biocompatibility in the long term. However, note that the addition of excess Nb and Ta to Ti alloys leads to higher manufacturing cost. To develop low-cost manufacturing processes, the effects of hot-forging…
We show that every linearly repetitive Delone set in the Euclidean d -space \mathbb{R}^{d} , with d⩾2 , is equivalent, up to a bi-Lipschitz homeomorphism, to the integer lattice \mathbb{Z}^{d} . In the particular case when the Delone set X in \mathbb{R}^{d} comes from a primitive substitution tiling of \mathbb{R}^{d}…
A proof-of-concept study is presented for a strategy to obtain maximally efficient and accurate morphing structures composed of active materials such as shape memory polymers (SMP) through synchronization of adaptable and localized activation and actuation. The work focuses on structures or structural components entir…
Materials on the scale of nanoscale have widely been used as research topics because of their interesting characteristics and aspects they bring into the field. Out of the many metal oxides, zinc oxide (ZnO) was chosen to be fabricated as nanofibers using the electrospinning method for potential uses of solar cells an…
The reduction of TiO 2 nanoparticle through interaction with H atom and characterization of resulting defect species with O 2 molecule adsorption were investigated by DFT calculations in a molecular cluster approach. The isolated cluster Ti 8 O 16 was used as a nanoparticle model. It was found that interaction between…
Abstract A series of cobalt‐free perovskite‐type cathode materials La 0.6 Sr 0.4 Fe 1– x Ni x O 3–δ (0 ≤ x ≤ 0.15) for intermediate temperature solid oxide fuel cells (IT‐SOFCs) are prepared by a citric‐nitrate process. The conductivities of the cathode materials are measured as functions of temperature (300–800 °C) i…
The formation of self-assembled nanotubes is usually accounted for by anisotropic elastic properties of membranelike precursors. We present experimental data as evidence of the role played by electrostatics in the formation of self-assembled tubes in alkaline aqueous suspensions of lithocholic acid (LCA). Striking sal…
A series of group 4 metal tetracarbamates M(O(2)CNR(2))(4) (M = Ti, R = Et, 1a; M = Zr, R = Et, 1b; (i)Pr, 1c; M = Hf, R = Et, 1d; R = (i)Pr, 1e) were studied as catalytic precursors in the solution polymerization of rac-lactide. The titanium complex but not the zirconium and hafnium ones increase the activity by addi…
A high-nitrogen-concentration diamond sample was subjected to 200-keV electron irradiation using a transmission electron microscope. The optical and spin-resonance properties of the nitrogen-vacancy (NV) color centers were investigated as a function of the irradiation dose up to 6.4 × 10(21) e(-)/cm(2). The microwave…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation D. West, Y. Y. Sun, S. B. Zhang; Importance of the correct Fermi energy on the calculation of def…