Giant magnetostriction and strain sensitivity of ZnFe2O4film in out-of-plane configuration

• Main Authors: Aireddy, H. (Author), Biswas, S. (Author), Das, A.K (Author), Guchhait, S. (Author), Kander, N.S (Author), Keerthana (Author)
• Format: Article
• Language: English
• Published: American Institute of Physics Inc. 2022
• Subjects: Giant magnetostriction; Giant strain; Iron compounds; Magnetic actuators; Magnetic storage; Magnetostriction; Optical-; Out-of-plane; Plane configurations; Plane geometry; Polycrystalline; Shape anisotropy; Silicon compounds; Strain sensitivity; Zinc compounds; ZnFe2O4
• Online Access: View Fulltext in Publisher

 We have investigated the in-plane and out-of-plane magnetostriction (λ) and strain sensitivity (d λ / dH) of the polycrystalline ZnFe2O4 (ZFO) film on an Si(100) substrate at room temperature using the optical cantilever beam magnetometer. A remarkable enhancement in magnetostriction (129.34%) and strain sensitivity (218.49%) is obtained in the out-of-plane configuration in comparison with the same in the in-plane configuration. The film possesses a high positive magnetostriction (strain sensitivity) of 325.67 ± 0.42 ppm (4.65 × 10 - 9 A - 1 m) and 746.92 ± 1.18 ppm (14.81 × 10 - 9 A - 1 m) for in-plane and out-of-plane geometry, respectively, at room temperature. The huge enhancement in magnetostriction and strain sensitivity is ascribed to the shape anisotropy of the ZFO/Si composite in the out-of-plane configuration, and thus, the out-of-plane configuration would be highly potential in designing magnetic actuators, magnetic memory devices, and bio-medical devices at room temperature. © 2022 Author(s).