Investigations of the magnetic phase state of Nd2Fe14B high-energy hard ferromagnets under the action of an explosive shock wave traveling across the magnetization vector, M, have been performed. We demonstrate that the transverse shock-wave compression of an Nd2Fe14B hard ferromagnet with pressure at the shock wave front of P = 22.3 GPa causes a hard ferromagnet — to — weak magnet phase transition. Due to this phase transition, the magnetostatic energy stored for an indefinite period of time in the Nd2Fe14B ferromagnet is released within a short time interval and can be transformed into pulsed primary power. Based on this effect we have developed a new type of ultracompact (volumes from 9 to 50 cm3) autonomous explosive-driven source of primary power that is capable of powering a magnetic flux compression generator with current up to 4 kA, and of charging high-voltage Arkadiev-Marx type generator capacitor banks.

Meeting Name

2005 Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter


Mining Engineering

Keywords and Phrases

High-Pressure Effects; Magnetic Transitions; Neodymium Compounds; Shock Wave Effects; Boron compounds; Ferromagnetic materials; Iron compounds

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2006 American Institute of Physics (AIP), All rights reserved.

Publication Date

01 Jan 2006