Tb0.3Dy0.7Fe1.92 nanoflakes prepared by surfactant-assisted high energy ball milling

Advances in nanostructured permanent magnets research

“…The nanochips showed magnetic anisotropy and can be aligned in a magnetic field [174]. rare-earth hard magnetic materials by SABM has been reported including Sm-Co [141][142][143][144][145][146][147][148][149][150][151][152][153][154][155], Nd-Fe-B [156][157][158][159][160][161][162], PrCo 5 [164], Tb-Dy-Fe [165], Tb-Fe-B [166] and YCo 5 [167] systems. The anisotropic nanochips containing fine grains can be aligned in a magnetic field.…”

A surfactant-assisted high energy ball milling technique to produce colloidal nanoparticles and nanocrystalline flakes in Mn–Al alloys

“…In fact, in the recent past, the use of surfactants during high-energy ball milling (HEBM) has become commonplace and is referred to as surfactant assisted-HEBM. [30][31][32][33][34][35][36][37][38] The use of surfactants during milling provides a capping layer on the freshly cleaved surface of the particles, which reduces the cold-welding between the particles. As a result, ne particles with narrow size distribution and shape homogeneity are produced by the SA-HEBM process.…”

“…As a result, ne particles with narrow size distribution and shape homogeneity are produced by the SA-HEBM process. [33][34][35][36] In addition, it has been demonstrated that by choosing appropriate powder/surfactant ratio, interesting structure/morphology and magnetic properties can be achieved in the milled powders. One such feature is 'aking', which is observed not only in the case of malleable metals and alloys, viz., Fe, Co, Ni, Cu, Fe-Co, Fe-Co-Zr, Fe-Si-Al and Sn-Ag-Cu; [39][40][41][42] but also in inherently brittle materials such as RE intermetallic compounds: Nd-Fe-B, SmCo 5 , Tb-Dy-Fe, PrCo 5 , CeCo 5 and NdCo 5 .…”

Microscale magnetoelectricity: Effect of particles geometry, distribution, and volume fraction

“…Several magnetic particles were studied, including CoFeO, NiZnFeO, and Terfenol-D, since they can attain the size limit and retain their magnetic properties (Martins et al, 2011; Newacheck and Youssef, 2019a; Zhang et al, 2009). A byproduct of the size reduction process (e.g., jar milling) is the non-uniform geometry, resulting in particles with jagged edges and flat surfaces (Tang et al, 1997; Zheng et al, 2011). The rotating ball mills cleave the brittle magnetic particles due to the localized impact between the former and the latter as the milling process takes place (Zheng et al, 2011).…”

“…A byproduct of the size reduction process (e.g., jar milling) is the non-uniform geometry, resulting in particles with jagged edges and flat surfaces (Tang et al, 1997; Zheng et al, 2011). The rotating ball mills cleave the brittle magnetic particles due to the localized impact between the former and the latter as the milling process takes place (Zheng et al, 2011). Figure S1(a) shows scanning electron micrograph of milled Terfenol-D particles signifying the sharp edges at cleaved surfaces.…”