title: Dynamics of strain bifurcations in a magnetostrictive ribbon.
abstract: We develop a coupled nonlinear oscillator model involving magnetization and strain to explain several experimentally observed dynamical features exhibited by forced magnetostrictive ribbon. Here we show that the model recovers the observed period-doubling route to chaos as function of the dc field for a fixed ac field and quasiperiodic route to chaos as a function of the ac field, keeping the dc field constant. The model also predicts induced and suppressed chaos under the influence of an additional small-amplitude near-resonant ac field. Our analysis suggests rich dynamics in coupled order-parameter systems such as magnetomartensitic and magnetoelectric materials.
authors.affiliation: Materials Research Centre, Indian Institute of Science, Bangalore 560012, India.
authors.forename: Ritupan
authors.initials: R
authors.lastname: Sarmah
authors.forename: G
authors.initials: G
authors.lastname: Ananthakrishna
mesh_terms: D003198:Computer Simulation; D055119:Elastic Modulus; D008280:Magnetics; D008420:Manufactured Materials; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D009991:Oscillometry / Q000379:methods*; D013314:Stress, Mechanical