Self-biased (EuHoBi)3(FeGa)5O12 garnet films with high coercivity for magnet-free optical isolator
Year: 2026
Type: article
Abstract: Self-biased magneto-optical single-crystalline garnet materials can eliminate the need for external driving magnetic fields, significantly reducing the size of photonic integrated circuits. In this study, an (EuHoBi)3(FeGa)5O12 single-crystalline film with rectangular magnetic hysteresis loops and self-biased characteristics was successfully grown by liquid-phase epitaxy on the (GdCa)3(ZrMgGa)5O12 (SGGG) substrate. The chemical composition, magnetic properties, and MO performance of the epitaxial film were systematically investigated. One of our as-grown (EuHoBi)3(FeGa)5O12 film exhibited a coercivity of 645 ± 5 Oe, a 100% remanence ratio, and a specific Faraday rotation angle of 1180 °/cm at 1310 nm, combined with an exceptionally low optical loss of merely 0.09 ± 0.03 dB. These findings demonstrate that the epitaxial (EuHoBi)3(FeGa)5O12 single-crystalline film holds great potential for enhancing the integration density of photonic integrated circuits.
Source: AIP Advances
DOI: 10.1063/5.0312889
Authors: Hanyu Sun, Shuting Yang, Han Li, Zhuo Li, Feng Wang, Wang Luo, Zehao Ru, Fuliang Xiang, Shixin Yu, Huaiwu Zhang, Qinghui Yang
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,350
OpenAlex ID: W7128490218