Interfacial roughness driven manipulation of magnetic anisotropy and coercivity in ultrathin thulium iron garnet films

Viet, Duc Duong; Van, Phuoc Cao; Thi, Trinh Nguyen; Ahn, Ha Yeong; Cao, Viêt; Nah, Junghyo; Kim, Ganghwi; Lee, Ki-Suk; Kim, Ji Wan; Jeong, Jong‐Ryul

doi:10.1016/j.jallcom.2022.166800

Cited by 9 publications

(2 citation statements)

References 44 publications

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“…Meanwhile, the TmIG film with T an of 950 °C, where at this condition the lattice constant of the TmIG film is strained, M s increases fourfold. The increase in M s with increasing post-annealing temperature has also been reported by Duong et al 27) They controlled and achieved M s close to the bulk TmIG with a T an of 1000 °C.…”

Section: Resultssupporting

confidence: 80%

Large-scale fabrication of thulium iron garnet film with perpendicular magnetic anisotropy using RF magnetron sputtering

Agusutrisno,

Obinata,

Okumura

et al. 2024

Jpn. J. Appl. Phys.

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Large-scale fabrication of thulium iron garnet (TmIG) films on GGG substrates, with a total area of 25 cm2, has been demonstrated by rotating substrate holder during on-axis sputtering. By optimizing the growth parameters based on the pressure and flow rate of the oxygen ratio, a Tm/Fe ratio of 0.65 was obtained, which is close to the stoichiometry of TmIG. The increase in post-annealing temperature has induced the growth of the TmIG structure by the strain of the lattice constant mechanism. At the highest post-annealing temperature, the crystal structure of TmIG (444) and the perpendicular magnetic anisotropy (PMA) were obtained. This result demonstrates the potential method for large-scale fabrication of TmIG film with PMA.

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Section: Resultssupporting

confidence: 80%

Large-scale fabrication of thulium iron garnet film with perpendicular magnetic anisotropy using RF magnetron sputtering

Agusutrisno,

Obinata,

Okumura

et al. 2024

Jpn. J. Appl. Phys.

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“…Specifically, although the PMA in TmIG is predominantly straindriven, a variety of extrinsic factors, such as film thickness, surface roughness, and stoichiometry can considerably influence the PMA strength. [25,31,32] Moreover, even under similar strain conditions, the PMA strength in TmIG films varies considerably across different research groups and growth techniques. [25,[32][33][34][35][36] Therefore, developing a reliable experimental approach to effectively control the PMA in TmIG films and understanding the underlying mechanisms are crucial for the continued exploration of spintronic phenomena and devices.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Perpendicular Magnetic Anisotropy in Tm₃Fe₅O₁₂(111) Epitaxial Films via Synergistic Stoichiometry and Strain Engineering

Liang,

Lu,

Yang

et al. 2024

Adv Funct Materials

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Establishing a reliable control of perpendicular magnetic anisotropy (PMA) is challenging but essential for the full utilization of rare‐earth iron garnets in spintronic devices. In this study, a feasible approach to enhance the PMA of ferrimagnetic thulium iron garnet (TmIG) films is presented. This approach involves precise adjustments in cation stoichiometry and epitaxial strain state. By fine‐tuning the pre‐ablation process and oxygen partial pressure during pulsed laser deposition, a series of high‐quality TmIG films can grow with variable cation stoichiometry, i.e., the Tm/Fe molar ratio. The finding reveals that cation stoichiometry plays a crucial role in determining the magnetic properties of the TmIG films. Particularly, the stoichiometric TmIG film has the strongest PMA due to the maximized magnetostriction coefficient. Combining this stoichiometry optimization and strain engineering, an unprecedented PMA strength of ≈30 kJ m−3 for TmIG is achieved. This achievement demonstrates a simple and effective method for harnessing the magnetic properties of rare‐earth iron garnet films, paving the way for their advanced applications in next‐generation spintronic devices.

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Iron Garnet Thin Films for Applications in Magnonics and Spintronics

Holzmann¹,

Albrecht²

2023

Encyclopedia of Materials: Electronics

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Interfacial roughness driven manipulation of magnetic anisotropy and coercivity in ultrathin thulium iron garnet films

Cited by 9 publications

References 44 publications

Large-scale fabrication of thulium iron garnet film with perpendicular magnetic anisotropy using RF magnetron sputtering

Large-scale fabrication of thulium iron garnet film with perpendicular magnetic anisotropy using RF magnetron sputtering

Enhancement of Perpendicular Magnetic Anisotropy in Tm₃Fe₅O₁₂(111) Epitaxial Films via Synergistic Stoichiometry and Strain Engineering

Iron Garnet Thin Films for Applications in Magnonics and Spintronics

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Interfacial roughness driven manipulation of magnetic anisotropy and coercivity in ultrathin thulium iron garnet films

Cited by 9 publications

References 44 publications

Large-scale fabrication of thulium iron garnet film with perpendicular magnetic anisotropy using RF magnetron sputtering

Large-scale fabrication of thulium iron garnet film with perpendicular magnetic anisotropy using RF magnetron sputtering

Enhancement of Perpendicular Magnetic Anisotropy in Tm3Fe5O12(111) Epitaxial Films via Synergistic Stoichiometry and Strain Engineering

Iron Garnet Thin Films for Applications in Magnonics and Spintronics

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Enhancement of Perpendicular Magnetic Anisotropy in Tm₃Fe₅O₁₂(111) Epitaxial Films via Synergistic Stoichiometry and Strain Engineering