4 天之前 · Spin Waves in Dirac Semimetal Ca 0.6 Sr 0.4 MnSb 2 Investigated with Neutrons by the Diffraction Method. Xiao Hu 1, Yan Wu 2, Matthias D. Frontzek 2, Zhixiang Hu 1,3, Cedomir Petrovic 1,4, John M. Tranquada 1, and Igor A. Zaliznyak 1,* 1 Condensed ...

In this paper, we described several straightforward and cost-effective methods to fabricate and characterize Ba 0.6 Sr 0.4 TiO 3 (BST) thin films at microwave frequencies. The prepared BST thin films here exhibit homogenous structures and great tunability ( η ) in a wide frequency and temperature range when the applied field is in the out-of ...

The active Ba 0.6 Sr 0.4 TiO 3 thin film hybrid metamaterial, with nanoscale thickness, delivers a transmission contrast up to ≈79% due to electrically enabled carrier transport between the ferroelectric thin film and silicon substrate. This work has significantly increased the low modulation rate of ferroelectric based devices in terahertz ...

2018年4月20日 · A-site deficient (La 0.6 Sr 0.4) 1–x Co 0.2 Fe 0.6 Nb 0.2 O 3–δ (x = 0, 0.05 and 0.10) symmetrical electrodes (hereafter denoted as LSCFN, LSCFN5, and LSCFN10, respectively) are obtained by doping Nb at the B site of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3–δ (LSCF) cathode. All three electrodes display excellent structural stability both …

2020年5月8日 · Epitaxial La 0.6 Sr 0.4 CoO 3−δ thin films with ~20 nm thickness were prepared on 10 × 10 × 0.5 mm 3 LaAlO 3 and SrTiO 3 (100) single crystals (Crystec, Germany) by pulsed laser deposition.

采用溶胶-凝胶法制备出匀质、比表面积高的la 0.6 sr 0.4 coo 3-δ (lsc)阴极前驱体粉体以及其与ce 0.8 gd 0.2 o 2-δ (cgo)的复合阴极粉体, 并通过tga、xrd和bet等手段对粉体进行表征; 结果表明: lsc阴极前驱体经在高温氩气中煅烧和在空气中850℃退火2 h后能够完成成相, 这相应于功能梯度阴极的制备和sofc电池堆 ...

2024年6月14日 · View a PDF of the paper titled Spin waves in Dirac semimetal Ca$_{0.6}$Sr$_{0.4}$MnSb$_2$ investigated with neutrons by the diffraction method, by Xiao Hu and 6 other ...

Nd 0.4 Sr 0.6 Co 0.8 Fe 0.2 O 3− δ 表现出最佳的氧还原催化活性。这些钙钛矿氧化物在600至800℃之间退火不会显示出电极性能的下降。 这些钙钛矿氧化物在600至800℃之间退火不会显示出电极性能的下降。

2024年9月25日 · We suggest that, presence of inherent spin polarization within La 0.6 Sr 0.4 Co 0.8 Fe 0.2 O 3−δ (LSCF6482) (15.86 emu g −1) and Ba 0.6 Sr 0.4 Co 0.8 Fe 0.2 O 3−δ (BSCF6482) (3.64 emu g −1) accounts for the excellent selective electrocatalysis towards ORR and OER. QSEI forms the atomic level basis for OER/ORR which is directly ...

2019年7月31日 · Here, we report a novel heterostructured composite nanofiber cathode composed of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ (LSCF) and CeO 2 nanoparticles, synthesized by using a coaxial electrospinning technique, which exhibits remarkably enhanced ORR activity and durability as compared to single LSCF powder and nanofibers.