Synthesis and magnetic properties of superparamagnetic CoAs nanostructures

Generalized Synthesis of EAs [E = Fe, Co, Mn, Cr] Nanostructures and Investigating Their Morphology Evolution

“…It has been predicted that the superparamagnetic can be increased by increasing the shape anisotropy, that is, changing the particle morphology from nanoparticles to 1D nanorods, and the current case with the CoAs nanostructures is a nice illustration of the predictive behavior. A detailed study of these magnetic properties has been discussed by the authors previously [26,27]. Higher along with larger coercivity increases the applicability of these nanostructures making them suitable for magnetic memory storage and related devices, and the ability to tune through subtle variation in the synthesis methodology as has been shown by this reported procedure will indeed have far-reaching implications.…”

“…The addition of a secondary amine altered the phase and solubility of the precursor resulting in nanoparticles as seen in Figure S2(b) in Supplementary Information. These CoAs nanostructures also show interesting magnetic property which evolved as a function of their morphology and the detailed analysis of these properties has been included in a manuscript submitted by the authors, which also contains other synthesis methods and characterizations of these nanostructures [27]. Figure 4(a) shows the PXRD pattern for MnAs nanoparticles obtained from the reaction of manganese carbonyl with TPA and the comparison with reported MnAs pattern (JCPDS-0072-1065).…”

“…It should be noted, however, that minimal solvents are required during the purification step due to the magnetic nature of these nanostructured transition metal arsenides. The generalized facile synthesis route to the transition metal arsenides is based on our previous report on the synthesis of superparamagnetic FeAs and soft ferromagnetic CoAs nanoparticles [26,27]. Typically the synthesis process involves hot-injection of the metal precursor into a refluxing mixture of the arsenic precursor in presence of a surfactant, followed by prolonged refluxing.…”

Periodical trends in [Co6E(CO)16]- clusters: Structural, synthetic and energy changes produced by substitution of P with As

“…Moreover, we plan to carry out thorough characterizations of the electron density distributions in both isomers. (11) 1172(4) 1487(4) 1366(4) 96(3) C (12) 1534(5) -279(6) 2783(6) 90(4) O (12) 1966(4) -357(6) 2466(5) 157(5) C (13) 841(5) -912(6) 3733(6) 78(4) O (13) 864(4) -1375(4) 4037 (5) 118(3) C (14) 1109 (5) 452 (6) 3807 (6) 76(4) O (14) 1271 (…”

“…[2] Accordingly, the quoted [Rh 10 As(CO) 22 ] 3was self-assembled in conditions suitable for the homogeneous catalytic conversion of CO-H 2 mixtures into oxygenated compounds, and proved to be stable at partial pressures of CO as high as 260 atm. [5] More recently, this class of compounds has been used as single source for the preparation of binary and ternary phases which, [12] on turn, can find application for magnetic nanoparticles, [13] for the deposition of thin films [14] or for electrocatalysis. [15] In the latter field, the presence of the main group element helps in forming amorphous layers which are more catalytically active than bulk metal.…”