Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back An Evaluation of Volume Fraction of Ferroparticles in Powder as Criterion Value to Control a Magnetic Properties of Isolated Particles D.А. SANDULYAK, А.А. SANDULYAK, М.N. POLISMAKOVA, А.V. SANDULYAK, A.S. KHARIN, I.A. SOLOVEV Available data of magnetic susceptibility of powder are useable for the purposes (previously problematic) of the determining magnetic susceptibility χ of conditionally isolated powder’ particles, but -data could be attracted from the linear section of a specially obtained dependence on the volume fraction γ of particles: then χ = /γ. On the example of natural magnetite powder an experimental evaluation of the criterion value γ = [γ] 0.2 is illustrated (transition value between linear and nonlinear sections of γ-dependence of ). At the same time, field dependencies of and χ data in the areas after extremum for susceptibility are inverse power function with a degree equals 0.7... 0.8. Keywords: diagnostics of magnetic susceptibility, powder of ferroparticles, responsibility of volume fraction. DOI: 10.25791/pribor.2.2023.1387 Pp. 16-22.