Abstract
We have studied the vertical hysteresis shift, the exchange bias, and the exchange spring effect in a polycrystalline sample of Bi0.84La0.16Fe0.96Ti0.04O3 at morphotropic phase boundary. The magnetic coupling at the phase boundary causes the formation of pinned spin region, which induces the spin rotation inside the two structural phases. The exchange coupling between the pinned spin and the two phases act as hard/soft coupling layers, respectively. Dependence on the strength of the spin pinning, we observed various types of the exchange coupling at different temperature.
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