A tetragonal polymorph of SrMn<sub>2</sub>P<sub>2</sub>made under high pressure – theory and experiment in harmony
作者:Weiwei Xie、Michał J. Winiarski、Tomasz Klimczuk、R. J. Cava
DOI:10.1039/c7dt00781g
日期:——
A trigonal–tetragonal phase transition in SrMn2P2is proposed and confirmed experimentally under high pressure. At ambient pressure, SrMn2P2crystallizes in the primitive trigonal La2O3structure type (space groupP3̄m1) in blue. Under high pressure, the tetragonal ThCr2Si2structure type (space groupI4/mmm) in red is more stable.
Mn-based ZrCuSiAs-type pnictides ThMnPnN (Pn = P, As) containing PbO-type Th2N2 layers were synthesized. The crystal and magnetic structures are determined using X-ray and neutron powder diffraction. While neutron diffraction indicates a C-type antiferromagnetic state at 300 K, the temperature dependence of the magnetic susceptibility shows cusps at 36 and 52 K respectively for ThMnPN and ThMnAsN.
Composition and structural perfection of (AIII,Mn)BV and MnBV (A = Ga, In; B = Sb, As, P) nanolayers
作者:V. S. Dunaev、B. N. Zvonkov、Yu. A. Danilov、O. V. Vikhrova、Yu. N. Drozdov、M. N. Drozdov、A. I. Suchkov
DOI:10.1134/s0020168512050044
日期:2012.6
We have determined the elemental composition of laser-deposited (Ga,Mn)Sb, (In,Mn)As, MnP, MnAs, and MnSb layers. The InMnAs layers were not single-phase and contained MnAs clusters. Active Ga and Mn diffusion to the substrate and arsenic diffusion from the substrate during the GaMnSb growth process is accompanied by the formation of a GaMnAs intermediate layer.
uniform-sized nanorods of transition metal phosphides from the thermaldecomposition of continuouslydelivered metal-phosphine complexes using a syringepump. MnP nanorods with dimensions of 8 nm x 16 nm and 6 nm x 22 nm sized were synthesized by the thermaldecomposition of Mn-TOP complex, which was prepared from the reaction of Mn(2)(CO)(10) and tri-n-octylphosphine (TOP), using a syringepump with constant
Efficient Water Oxidation Using CoMnP Nanoparticles
作者:Da Li、Habib Baydoun、Cláudio N. Verani、Stephanie L. Brock
DOI:10.1021/jacs.6b01543
日期:2016.3.30
Earth-abundant materials is a prerequisite to enabling water splitting as a feasible source of alternative energy. In this work, we report the synthesis of ternarycobalt manganese phosphide nanoparticles from the solution-phase reaction of manganese and cobalt carbonyl complexes with trioctylphosphine. The CoMnP nanoparticles (ca. 5 nm in diameter) are nearly monodisperse and homogeneous in nature. These CoMnP
开发基于廉价且地球资源丰富的材料的高效水氧化催化剂是使水分解成为可行的替代能源来源的先决条件。在这项工作中,我们报告了从锰和羰基钴配合物与三辛基膦的溶液相反应合成三元钴锰磷化物纳米颗粒。CoMnP 纳米颗粒(直径约 5 纳米)在性质上几乎是单分散和均质的。当与炭黑和 Nafion 一起沉积为墨水时,这些 CoMnP 纳米颗粒能够在 0.33 V 的过电位下以 96% 的法拉第效率催化水氧化。在 500 次循环后观察到活性略有下降,这归因于 P 蚀刻到溶液中,以及纳米颗粒表面的氧化。