Tunable compensation temperature through ferromagnetic coupling in perpendicular Tb3Fe5O12/Eu3Fe5O12 bilayer heterostructure

Pei Gen Li; Jing Ming Liang; Sheung Mei Ng; Hon Fai Wong; Yan Zhou; Ling Jhen Huang; Ko Wei Lin; Yuen Hong Tsang; Chee Leung Mak; Chi Wah Leung

doi:10.1016/j.jmmm.2024.171785

Tunable compensation temperature through ferromagnetic coupling in perpendicular Tb₃Fe₅O₁₂/Eu₃Fe₅O₁₂ bilayer heterostructure

Pei Gen Li, Jing Ming Liang, Sheung Mei Ng, Hon Fai Wong, Yan Zhou, Ling Jhen Huang, Ko Wei Lin, Yuen Hong Tsang, Chee Leung Mak, Chi Wah Leung

Research output: Journal article publication › Journal article › Academic research › peer-review

2 Citations (Scopus)

Abstract

Rare-earth ion garnets (ReIG) with magnetization compensation are being extensively studied, such as in the ferrimagnetic insulator (FMI)/heavy metal (HM) heterostructures, with primary focus on the interface effect between single-layer garnets and HM. Here, we study the anomalous Hall behavior of bilayer garnet in Tb₃Fe₅O₁₂ (TbIG)/Eu₃Fe₅O₁₂ (EuIG)/Pt system. TbIG (30 nm)/EuIG (t nm) films with strong perpendicular magnetic anisotropy (PMA) were deposited on single-crystal Gd₃Ga₅O₁₂ (GGG) (1 1 1) substrates using pulsed laser deposition. Subsequently, a 5-nm Pt layer was sputtered and patterned into Hall bars. Tunable compensation temperature (T_comp) was achieved in the system by changing the thickness of EuIG, which is ascribed to the ferromagnetic coupling of Fe sublattices in the two different garnets. This study provides guidance for designing garnet spintronic devices with controllable compensation behavior.

Original language	English
Article number	171785
Journal	Journal of Magnetism and Magnetic Materials
Volume	592
DOIs	https://doi.org/10.1016/j.jmmm.2024.171785
Publication status	Published - 15 Feb 2024

Keywords

Iron garnet
Magnetization compensation
Perpendicular magnetic anisotropy
Spin Hall effect

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

More information

10.1016/j.jmmm.2024.171785

Cite this

@article{04d37213c5334b5689e8d3425623f5d2,

title = "Tunable compensation temperature through ferromagnetic coupling in perpendicular Tb3Fe5O12/Eu3Fe5O12 bilayer heterostructure",

abstract = "Rare-earth ion garnets (ReIG) with magnetization compensation are being extensively studied, such as in the ferrimagnetic insulator (FMI)/heavy metal (HM) heterostructures, with primary focus on the interface effect between single-layer garnets and HM. Here, we study the anomalous Hall behavior of bilayer garnet in Tb3Fe5O12 (TbIG)/Eu3Fe5O12 (EuIG)/Pt system. TbIG (30 nm)/EuIG (t nm) films with strong perpendicular magnetic anisotropy (PMA) were deposited on single-crystal Gd3Ga5O12 (GGG) (1 1 1) substrates using pulsed laser deposition. Subsequently, a 5-nm Pt layer was sputtered and patterned into Hall bars. Tunable compensation temperature (Tcomp) was achieved in the system by changing the thickness of EuIG, which is ascribed to the ferromagnetic coupling of Fe sublattices in the two different garnets. This study provides guidance for designing garnet spintronic devices with controllable compensation behavior.",

keywords = "Iron garnet, Magnetization compensation, Perpendicular magnetic anisotropy, Spin Hall effect",

author = "Li, {Pei Gen} and Liang, {Jing Ming} and Ng, {Sheung Mei} and Wong, {Hon Fai} and Yan Zhou and Huang, {Ling Jhen} and Lin, {Ko Wei} and Tsang, {Yuen Hong} and Mak, {Chee Leung} and Leung, {Chi Wah}",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",

year = "2024",

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day = "15",

doi = "10.1016/j.jmmm.2024.171785",

language = "English",

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T1 - Tunable compensation temperature through ferromagnetic coupling in perpendicular Tb3Fe5O12/Eu3Fe5O12 bilayer heterostructure

AU - Li, Pei Gen

AU - Liang, Jing Ming

AU - Ng, Sheung Mei

AU - Wong, Hon Fai

AU - Zhou, Yan

AU - Huang, Ling Jhen

AU - Lin, Ko Wei

AU - Tsang, Yuen Hong

AU - Mak, Chee Leung

AU - Leung, Chi Wah

PY - 2024/2/15

Y1 - 2024/2/15

N2 - Rare-earth ion garnets (ReIG) with magnetization compensation are being extensively studied, such as in the ferrimagnetic insulator (FMI)/heavy metal (HM) heterostructures, with primary focus on the interface effect between single-layer garnets and HM. Here, we study the anomalous Hall behavior of bilayer garnet in Tb3Fe5O12 (TbIG)/Eu3Fe5O12 (EuIG)/Pt system. TbIG (30 nm)/EuIG (t nm) films with strong perpendicular magnetic anisotropy (PMA) were deposited on single-crystal Gd3Ga5O12 (GGG) (1 1 1) substrates using pulsed laser deposition. Subsequently, a 5-nm Pt layer was sputtered and patterned into Hall bars. Tunable compensation temperature (Tcomp) was achieved in the system by changing the thickness of EuIG, which is ascribed to the ferromagnetic coupling of Fe sublattices in the two different garnets. This study provides guidance for designing garnet spintronic devices with controllable compensation behavior.

AB - Rare-earth ion garnets (ReIG) with magnetization compensation are being extensively studied, such as in the ferrimagnetic insulator (FMI)/heavy metal (HM) heterostructures, with primary focus on the interface effect between single-layer garnets and HM. Here, we study the anomalous Hall behavior of bilayer garnet in Tb3Fe5O12 (TbIG)/Eu3Fe5O12 (EuIG)/Pt system. TbIG (30 nm)/EuIG (t nm) films with strong perpendicular magnetic anisotropy (PMA) were deposited on single-crystal Gd3Ga5O12 (GGG) (1 1 1) substrates using pulsed laser deposition. Subsequently, a 5-nm Pt layer was sputtered and patterned into Hall bars. Tunable compensation temperature (Tcomp) was achieved in the system by changing the thickness of EuIG, which is ascribed to the ferromagnetic coupling of Fe sublattices in the two different garnets. This study provides guidance for designing garnet spintronic devices with controllable compensation behavior.

KW - Iron garnet

KW - Magnetization compensation

KW - Perpendicular magnetic anisotropy

KW - Spin Hall effect

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DO - 10.1016/j.jmmm.2024.171785

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JO - Journal of Magnetism and Magnetic Materials

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