Fabrication and Characterization of Mn2B Nanoparticles by Mechanochemical Method

Abstract

In this study, elemental Mn and B initial materials were used to synthesize pure Mn 2 B nanocrystals by ball milling. Milling experiments were conducted with highenergy planetary ball mill in a hardened steel vial with hardened steel balls, under Ar atmosphere at 40:1 ball-to-powder ratio and 300 rpm rotating speed. As synthesized Mn 2 B nanocrystals phase structures and morphological/microstructural investigation were analyzed by X-Ray diffractometry (XRD) and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM/EDX), respectively. Particle size of Mn 2 B were calculated as 34.5 nm by Rietveld refinement. Furthermore, the magnetic behavior of nanocrystals were determined by vibrating sample magnetometer (VSM). Mn 2 B sample shows ferromagnetic behavior at room temperature with saturation magnetization of 13 emu/g and coercivity of 90 Oe.

Determination of Self-Esteem and Mental Status of Abused and Neglected and Non-Neglected Adolescent

“…Çocukların fiziksel, ruhsal ve sosyal açıdan sağlıklı olarak gelişmeleri için anne-baba ya da çocuğa bakan kişi ile çocuk arasındaki karşılıklı sevgi bağının kurulmasının önemi çok büyüktür. 2 Çocukların fizyolojik, psikolojik ve sosyal açıdan sağlıklı yetişmesini sağlamak ailenin yasalar ve geleneklerle belirlenen görevleri arasında yer almaktadır. Ailenin çocuk üzerindeki etkisi doğum öncesinde başlamakta ve tüm yaşamı boyunca devam etmektedir.…”

Investigation of the structural and magnetic properties of amorphous/nanocrystalline Fe70Ti10B20 (%at.) alloys by mechanical alloying

“…The MA is mostly preferred due to its simplicity, relatively low-cost equipment, flexibility of the processes and ability to allow material synthesis such as equilibrium and nonequilibrium materials at room temperature. During the mechanisms such as continuous flattening, cold welding and re-breaking of particles various nanostructured materials and amorphous particles can be synthesized in the range of several microns to nanometer scales [1][2][3][4][5]. Especially, some features of synthesized nanostructured materials such as high strength, hardness, ductilization of brittle materials and enhanced diffusivity have superior properties compared to traditional materials [6][7][8].…”