2016/07/27 by Huifeng Zhang, Hui-Feng Zhang, Jian Li +12
Materials Science · Physics and Astronomy · #Chemical Physics (physics.chem-ph) #FOS: Physical sciences #Ferroelectric and Piezoelectric Materials #Magnetic Properties and Synthesis of Ferrites #Materials Science (cond-mat.mtrl-sci) #Multiferroics and related materials #cond-mat.mtrl-sci #physics.chem-ph
paper · pdf · doi:10.48550/arxiv.1607.07929
8 pages, 7 figures
openalex publication_date 2016/07/27 · arxiv created 2016/08/10 · arxiv updated 2016/08/11 · openalex created_date 2016/08/23 · openalex updated_date 2026/07/28
The humidity sensitivity of n-type strontium-hexaferrite semiconductors, X-type (Sr2Co2Fe28O46) and Z-type (Sr3Co2Fe24O41), are investigated at room temperature. The contact and reactions between water and material surface are demonstrated considering the formation of oxide ion vacancy, singly-ionized / fully-ionized oxide ion vacancy, and the chemisorbed / physisorbed / condensed water. An impedance spectra model is proposed considering the material-electrode interface, interior material, grain boundary, absorbed water and Warburg response. The mechanism of electronic coupled with protonic conduction and humidity sensing mechanism are explained.