Out-of-plane magnetic anisotropy enhancement in La1-xSrxCoO3-δ/La2/3Sr1/3MnO3/La1-xSrxCoO3-δ thin films

Wang, Wei; Zhang, Jine; Shen, Xi; Guan, Xiangxiang; Yao, Yuan; Li, Junjie; Gu, Changzhi; Sun, Jirong; Zhu, Yimei; Tao, Jing; Yu, Richeng

doi:10.1103/PhysRevB.101.024406

Out-of-plane magnetic anisotropy enhancement in $L a_{1 - x} S r_{x} Co O_{3 - δ} / L a_{2 / 3} S r_{1 / 3} Mn O_{3} / L a_{1 - x} S r_{x} Co O_{3 - δ}$ thin films

Journal Article · Fri Jan 10 00:00:00 EST 2020 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.101.024406· OSTI ID:1599581

Wang, Wei ^[1]; Zhang, Jine ^[2]; ^[2]; Guan, Xiangxiang ^[2]; ^[2]; Li, Junjie ^[2]; Gu, Changzhi ^[2]; Sun, Jirong ^[2]; Zhu, Yimei ^[3]; ^[3]; ^[2]

Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS); Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics
Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS)
Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics

Perpendicular magnetic anisotropy (PMA) in multilayer thin films promotes the development of spintronic and magnonic research fields. The origin of the PMA deserves a thorough investigation since it contains rich physics related to multiple factors in the heterostructure system. In this report, we study the origin of PMA in La_2/3Sr_1/3 Mn O₃ (LSMO) thin films sandwiched by La_1-xSr_xCoO_3-δ (LSCO) layers grown on SrTiO₃ substrate, using aberration-corrected scanning transmission electron microscopy. Our findings indicate that the lattice and electronic structures of LSMO can be modified through the inhomogeneous strains induced by nanodomains in LSCO layers. Moreover, we infer that the lattice distortion in LSCO at low temperatures is a driving force to reorient the spin moment from in-plane direction to out-of-plane direction in LSMO, which could be the nature of the PMA formation. The symmetry breaking in the LSMO layer induced by the domains from LSCO enhances magnetic anisotropy energy in LSMO.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: SC0012704

OSTI ID:: 1599581

Report Number(s):: BNL--213630-2020-JAAM

Journal Information:: Physical Review B, Journal Name: Physical Review B Journal Issue: 2 Vol. 101; ISSN 2469-9950; ISSN PRBMDO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Out-of-plane magnetic anisotropy enhancement in $L a_{1 - x} S r_{x} Co O_{3 - δ} / L a_{2 / 3} S r_{1 / 3} Mn O_{3} / L a_{1 - x} S r_{x} Co O_{3 - δ}$ thin films