Tuning magnetic and optical properties through strain in epitaxial LaCrO3 thin films

Abstract

We report on the effect of epitaxial strain on magnetic and optical properties of perovskite LaCrO3 (LCO) single crystal thin films. Epitaxial LCO thin films are grown by pulsed laser deposition on proper choice of substrates to impose different strain states. A combined experimental and theoretical approach is used to demonstrate the direct correlation between lattice-strain and functional properties. The magnetization results show that the lattice anisotropy plays a critical role in controlling the magnetic behavior of LCO films. The strain induced tetragonality in the film lattice strongly affects the optical transitions and charge transfer gap in LCO. This study opens new possibilities to tailoring the functional properties of LCO and related materials by strain engineering in epitaxial growth.

An efficient material search for room-temperature topological magnons

“…For hematite, chemical vapor transport has been used to produce millimeter-by-millimeter scale α-Fe 2 O 3 ( 35 ). In the case of LaCrO 3 thin films, the pseudocubic phase has been grown epitaxially on SrTiO 3 (001) to use strain to tune magnetic and optical properties ( 36 ). Furthermore, substitutions in M x La 1− x CrO 3 (i.e., M = Sr, x < 0.25) has been used to control p-type doping and induce in-plane ≈2% compressive to ≈2% tensile strain ( 37 ).…”

Structural and Optical Properties of High Entropy (La,Lu,Y,Gd,Ce)AlO3 Perovskite Thin Films

“…Additionally, strain-engineering through the use of alternative substrates and nanocomposite epitaxial relationships may allow for further tuning of structural and optical properties. [44,[66][67][68] We would also like to emphasize that there exists the possibility of an optical cascade for downgraded emission. As discussed previously, [17][18][19] energy transfer for Ce 3+ → Tb 3+ → Eu 3+ can occur.…”

“…Additionally, strain‐engineering through the use of alternative substrates and nanocomposite epitaxial relationships may allow for further tuning of structural and optical properties. [ 44 , 66 , 67 , 68 ]…”