对于掺杂锰氧化物而言,基于Jahn-Tellar 晶体结构畸变的强声子-电子耦合作用,会影响材料的金属－绝缘转变,巨磁阻,各向异性磁阻,相共存等性质.块材La5/8-yPryCa3/8MnO3 体系中,随着Pr 掺杂量的增加,伴随着铁磁金属相,反铁磁绝缘相(电荷有序相)的出现极大地丰富了该体系的物理内涵.通过选用不同的衬底,调节Pr 掺杂量,薄膜中的反铁磁绝缘相较容易被调控.在这篇报告里,我们主要
Blueshifts in the near band edge (NBE) luminescence spectra of direct bandgap semiconductor nanostructures such as ZnO have been commonly observed in previous reports,which were usually attributed to
运用水热法成功制备了基于FTO (F:SnO2) 衬底垂直取向自组装生长的TiO2阵列薄膜.通过控制前驱体溶液中酸离子类型,如Cl-和SO42-离子,可以实现选择性生长锐钛矿相、金红石相或两相混合的TiO2薄膜.
表面等离子激元是在金属表面产生的一种光和金属自由电子集体共振耦合波,这种耦合波表现出奇异的光场局域特性.以等离子激元为基础的波导器件能够突破传统光学衍射极限的限制,获得强局域的光场传播特性.
Surface plasmon resonance (SPR) effect has been attracting more and more attention due to its promising applications in kinds of devices,such as photovoltaic cells,molecular-level detectors,bio-sensor
Here,we report on step-by-step oxidation of an individual single-layer graphene using low-pressure mild plasma using a mixture of oxygen and water gases.Porous mask on top of graphene is essential as
On the basis of molecular dynamics simulations,we investigate water permeation across a single walled carbon nanotube under the influence of four symmetrical half rings,each has six LiF dipolar molecu