The emergence of high room temperature in-plane and out-of-plane magnetostriction in polycrystalline CoFe2O4 film

Suman Guchhait,H Aireddy,A K Das

doi:10.1038/s41598-021-02421-w

Suman Guchhait, H Aireddy + Show 1 more

Open Access

https://doi.org/10.1038/s41598-021-02421-w

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Abstract

The polycrystalline CoFe2O4 (CFO) film on cantilever substrate of silicon was grown using pulsed laser deposition (PLD) method and investigated its in-plane and out-of-plane magnetostrictive strain at room temperature (300 K) using the indigenous optical Cantilever Beam Magnetometer (CBM). The film shows a high compressive magnetostrictive strain of ‒ 387 ppm and ‒ 708 ppm for in-plane and out-of-plane configurations, respectively. Considerably, the magnetostrictive strain loops (λ‒H) possess a certain degree of hysteresis with a symmetric butterfly shape. The origin of large compressive magnetostriction of CFO film is attributed to the non-180° domain wall motion followed by 90° domain rotation. The large values of saturation magnetostrictive strain make CFO film a suitable candidate in sensor design for different purposes.

Highlights

The polycrystalline CoFe2O4 (CFO) film on cantilever substrate of silicon was grown using pulsed laser deposition (PLD) method and investigated its in-plane and out-of-plane magnetostrictive strain at room temperature (300 K) using the indigenous optical Cantilever Beam Magnetometer (CBM)
We report the room temperature magnetostriction in the in-plane and out-of-plane configurations of polycrystalline CFO film characterizing with an indigenously built optical cantilever beam magnetometer (CBM) set-up
The typical cross-sectional view ensures the growth of CFO film over the Si substrate