Preparation of thulium iron garnet ceramics and investigation of spin transport properties in thin films. Issue 6 (15th April 2019)

• Record Type: Journal Article
• Authors: Wang, Shuanhu; Li, Gang; Huang, Xuechen; Tian, Yingyi; Yu, Jiayao; Ren, Lixia; Zhang, Hongrui; Wang, Jianyuan; Jin, Kexin
• Is Part Of: Ceramics international. Volume 45:Issue 6(2019)
• Page Start: 7649
• Page End: 7653
• Publication Date: 2019-04-15
• Subjects: Thulium iron garnet -- Compensated ferrimagnet -- Magnetic insulators -- Spin transport properties; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.01.063
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Compensated ferrimagnetic thulium iron garnet ceramics were prepared by the sol-gel method, which is significantly better than conventional solid-state reactions. Saturation magnetization yielded a maximum of 16.7 emu/g for specimens sintered at 900 °C. Subsequently, using the TmIG bulk as the target, an epitaxial film was grown by pulsed laser deposition. Furthermore, the spin transport properties of film with an attached 5 nm-thick platinum layer were studied in terms of longitudinal spin Seebeck effect (LSSE) and spin Hall magnetoresistance (SMR). The LSSE coefficient was as high as 0.38 μV/K and the SMR was 0.0072%. These results indicated that the bulk material and thin film presented excellent qualities, which are extremely important for the fundamental investigation of novel spin transport behaviour in compensated ferrimagnetic insulators. These results also provide more alternatives for spintronic materials.