One-step hydrothermal synthesis and enhanced microwave absorption properties of Ni0.5Co0.5Fe2O4/graphene composites in low frequency band. Issue 17 (1st December 2018)

• Record Type: Journal Article
• Authors: Yin, Pengfei; Deng, Yu; Zhang, Limin; Wu, Wenjuan; Wang, Jian; Feng, Xing; Sun, Xiyuan; Li, Huayao; Tao, Yu
• Is Part Of: Ceramics international. Volume 44:Issue 17(2018)
• Page Start: 20896
• Page End: 20905
• Publication Date: 2018-12-01
• Subjects: Ferrites -- Graphene -- Composites -- Microwave absorption properties -- Hydrothermal synthesis method; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.08.096
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Ni0.5 Co0.5 Fe2 O4 /graphene composites were synthesized successfully via one-step hydrothermal method. The crystal structure, morphology and corresponding elemental distribution, electromagnetic parameters and microwave absorption performances of the as-prepared composites were measured by XRD, SEM, TEM and VNA, respectively. The results indicated that the microwave absorbing performance can be obviously enhanced through the addition of graphene in a suitable range, the magnetic loss plays a dominant contribution for the microwave absorption of composites. The maximum reflection loss of −30.92 dB at 0.84 GHz with a −10 dB bandwidth over the frequency range of 0.58–1.19 GHz is obtained when the composite contains 12 wt% graphene and the thickness of sample is 4 mm. This investigation presents a simple method to prepare Ni0.5 Co0.5 Fe2 O4 /graphene composites with excellent microwave absorption performance in the low frequency band of 0.1–3 GHz.