College of Electronics Information, Hangzhou Dianzi University, Hangzhou 310018, China
Mengjiao Chi
College of Electronics Information, Hangzhou Dianzi University, Hangzhou 310018, China
Liu Yang
College of Electronics Information, Hangzhou Dianzi University, Hangzhou 310018, China
Bing Liu
College of Electronics Information, Hangzhou Dianzi University, Hangzhou 310018, China
Minmin Mao
College of Electronics Information, Hangzhou Dianzi University, Hangzhou 310018, China
Hadi Barzegar Bafrooei
College of Electronics Information, Hangzhou Dianzi University, Hangzhou 310018, China
Zhongyan Ma
Institute of Communication Materials, Zhejiang Wazam New Materials Co., Ltd., Hangzhou 311121, China
Yingjie Ren
Institute of Communication Materials, Zhejiang Wazam New Materials Co., Ltd., Hangzhou 311121, China
Feng Shi
School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
Ehsan Taheri-Nassaj
Department of Materials Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran 14115-143, Iran
Dawei Wang
Functional Materials and Acousto-Optic Instruments Institute, School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin 150080, China
Kaixin Song
College of Electronics Information, Hangzhou Dianzi University, Hangzhou 310018, China
In this study, dense composites of xNaCl-(1−x)Ni0.5Zn0.5Fe2O4 (referred to as NaCl-NZO) and xH3BO3-(0.8−x)Ni0.5Zn0.5Fe2O4-0.2NaCl (referred to as HB-NZO-NaCl) were prepared using the cold sintering process. The objective was to investigate the cold sintering procedure for fabricating ferrite composite ceramics with comparable permeability and dielectric constants suitable for radio-frequency electronic device applications. Optimal cold sintering conditions were determined as 200 °C/30 min/500 MPa with a relative density of 95% for NaCl-NZO and 120 °C/30 min/300 MPa with a relative density of 95.4% for HB-NZO-NaCl. X-ray diffraction and scanning electron microscope analyses confirmed the absence of secondary phases. The resulting composite ceramics showed promising characteristics, with the 0.5NaCl-0.5NZO composition exhibiting a dielectric constant of 6.2 @ 100 MHz, dielectric loss of 0.02 @ 100 MHz, permeability of 2.5 @ 100 MHz, and magnetic loss of 0.001 @ 100 MHz. Similarly, the 0.3HB-0.5NZO-0.2NaCl composition displayed a dielectric constant of 5.9 @ 100 MHz, dielectric loss of 0.02 @ 100 MHz, permeability of 5.1 @ 100 MHz, and magnetic loss of 5 × 10−4 @ 100 MHz. These findings indicate potential applications in wireless communication.
