Preparation of thulium iron garnet ceramics and investigation of spin transport properties in thin films

Wang, Shuanhu; Li, Gang; Huang, Xuechen; Tian, Yingyi; Yu, Jiayao; Ren, Lixia; Zhang, Hongrui; Wang, Jianyuan; Kusaka, Jin

doi:10.1016/j.ceramint.2019.01.063

Cited by 5 publications

(1 citation statement)

References 23 publications

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“…16,17 Lately, however, the focus has started to shift towards REIGs with magnetic rare-earth elements such as Tm 3 Fe 5 O 12 (TmIG), Eu 3 Fe 5 O 12 (EuIG), Tb 3 Fe 5 O 12 (TbIG), etc. [18][19][20][21][22][23] In these films, it is possible to obtain straininduced PMA due to the lattice mismatch with Gd 3 Ga 5 O 12 (GGG) or similar substrates. [24][25][26] Moreover, coupled lattice dynamics, together with magnetic and angular compensation in ferrimagnets, allow high-speed and efficient magnetization manipulation by means of magnetic fields 27 and spinorbit torques.…”

Section: Introductionmentioning

confidence: 99%

Sputtered terbium iron garnet films with perpendicular magnetic anisotropy for spintronic applications

Damerio

Avci

2023

Journal of Applied Physics

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We report the structural, magnetic, and interfacial spin transport properties of epitaxial terbium iron garnet (TbIG) ultrathin films deposited by magnetron sputtering. High crystallinity was achieved by growing the films on gadolinium gallium garnet substrates either at high temperatures, or at room temperature followed by thermal annealing, above 750 °C in both cases. The films display large perpendicular magnetic anisotropy (PMA) induced by compressive strain, and tunable structural and magnetic properties through growth conditions or the substrate lattice parameter choice. The ferrimagnetic compensation temperature ([Formula: see text]) of selected TbIG films was measured through the temperature-dependent anomalous Hall effect in Pt/TbIG heterostructures. In the studied films, [Formula: see text] was found to be between 190 and 225 K, i.e., approximately 25-60 K lower than the bulk value, which is attributed to the combined action of Tb deficiency and oxygen vacancies in the garnet lattice evidenced by x-ray photoelectron spectroscopy measurements. Sputtered TbIG ultrathin films with large PMA and highly tunable properties reported here can provide a suitable material platform for a wide range of spintronic experiments and device applications.

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