At the above mentioned helium plasma conditions, the line splitting in a hyperfine structure has been overpowered by Stark and Doppler broadenings in the case of the Mn II lines belonging to the 3d54sa5S2鈥 3d54pz5P1,2,3o transition (293.3055, 293.9308 and 294.9205nm). We estimate that ...
Average particle sizes decreased from 12.5 nm for Ni/SA to between 5.5 and 7.0 nm for Mn-containing catalysts. Nevertheless, HAADF-STEM measurements did not evidence a clear trend of smaller particles for higher Mn/Ni ratio (Table 1). Download: Download high-res image (251KB) Download: ...
Light and dark alternating areas correspond to the GaN laanyderAislxGalsao1−dxNist:Mingnuriesghiaobnles of at the the Bragg top of pairs, respectively. In panel (a) the 130 nm thick GaN:(Mn,Mg) active the structure. Panel (c) High resolution HAADF/STEM acquired along the[1120] ...
X-ray diffraction (XRD) patterns were obtained using a Phillips model PW-1729 diffractometer within the 2θrange of 4–80° at room temperature. The X-ray wavelength wasλ = 0.15406 nm. This analysis was conducted at the central laboratory of Tanta University. The determination of the cr...
Scale bar: 100 nm. e interface between BCC matrix (red) and α-Mn A12 phase (green). The insets are corresponding FFTs displays the cube-on-cube orientation relationship. Scale bar: 5 nm. f, g atomic resolution image of the BCC matrix and α-Mn A12 phase, respectively. Scale ...
This phase exhibits specific orientation relationships with the icosahedral quasicrystal given by [0001]hex//2f QC and [0110]hex//5f QC, where 2f QC and 5f QC represent twofold and fivefold axes respectively. Electron diffraction patterns from both phases exhibit a close resemblance to the ...
1.25 nm (Supplementary Fig.11). The specific in-situ separation of Ir nanoclusters inevitably induces chaotic atomic arrangement, leading to abundant heterointerfaces and local pores within Ir/MnOx(Fig.1e). A d-spacing, measured as 0.191 nm, can be ascribed to (200) facets offccIr, ...
The lanthanum precursor, the strontium precursor, and the manganese precursor are mixed with the molar ratio of 7:3:10, respectively. The mixture is then mixed with solvent, such as pure water and stirred until becoming uniform to prepare a 5 wt % solution. In this example, the lanthanum ...
The large negative magnetoresistance has also been observed in other bulk form DMSs, smuacghnaesto(rBeas0is.9tKan0.1c)e(Ctod2t−hxeMsunpx)p2Aress2s1i6oannodf (sSpri0n.9Kfl0u.1c)t(uZanti1o.8nMsnb0y.2)aApsp2l1i7e.dWfieeltde.ntatively attribute the negative AC susceptibility. ...
In samples MP1 and MP3, the PtNPs are homogeneously dispersed on the surface of the MnO2 support with sizes of 1.3 and 2.6 nm, respectively. In sample MP5, both small PtNPs with a size of 2.0 nm and large PtNPs with a size of about 14 nm are present. The results of STEM are in...