Colossal piezomagnetic response in magnetically pressed Zr⁺⁴ substituted cobalt ferrites.

ABSTRACT: A remarkable 111% increase in magnetostriction (λ) and 435% increase in strain sensitivity (dλ/dH) (compared to normally compacted (NC) unsubstituted CoFe₂O₄ (CFO)) of Zr⁺⁴ doped CFO sample, Co_1.2Zr_0.2Fe_1.6O₄, prepared by magnetic field assisted compaction, have been reported in this study. Magnetic field assisted compaction (MC) has been employed to process Zr-doped cobalt ferrites, Co_1+xZr_xFe_2-2xO₄ (0 ≤ × ≤ 0.4), to further improve the magnetoelastic properties. Saturation magnetization (M _S ) and coercivity (H _C ) increase from ~426 kA/m and ~4.4 kA/m respectively, for x = 0, to ~552 kA/m and ~7.11 kA/m respectively for x = 0.2. Dramatic increase

SUBMITTER: Reddy MV 

PROVIDER: S-EPMC5554159 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature