The magnetic and dielectric properties of multiferroic Sr- substituted Zn2-Y hexagonal ferrites
Xu Fang (徐芳), Bai Yang (白洋), Ai Fen (艾芬), Qiao Li-Jie (乔利杰)
Corrosion and Protection Center, Key Laboratory of Environmental Fracture (Ministry of Education), University of Science and Technology Beijing, Beijing 100083, China
Abstract The magnetic and dielectric properties of Sr-substituted Zn2-Y hexagonal ferrites (Ba2-xSrxZn2Fe12O22, 1.0≤x≤1.5) are studied in this paper. Sr substitution will lead to the variation of cation occupation, which influences both the magnetic and electric properties. As Sr content x rises from 1.0 to 1.5, magnetic hysteresis loop gets wider gradually and the permeability drops rapidly due to the transformation from ferrimagnetic to antiferromagnetic phase. Moreover, permittivity rises with increasing Sr content. Under a certain external magnetic field, the phase transition of helical spin structure of Ba0.5Sr1.5Zn2Fe12O22 at about 295K seems to open a possibility for the room-temperature ferroelectricity induced by magnetic field. But its low resistivity prevents the observation of ferroelectric and magnetoelectric properties at room-temperature.
Received: 20 February 2008
Revised: 20 July 2008
Accepted manuscript online:
PACS:
75.60.Ej
(Magnetization curves, hysteresis, Barkhausen and related effects)
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 50702005 ), the
Specialized Research Fund for the Doctoral Program of Higher
Education (Grant No 20070008027), and the Beijing Municipal
Commission of Education (Grant No SYS1
Cite this article:
Xu Fang (徐芳), Bai Yang (白洋), Ai Fen (艾芬), Qiao Li-Jie (乔利杰) The magnetic and dielectric properties of multiferroic Sr- substituted Zn2-Y hexagonal ferrites 2008 Chin. Phys. B 17 4652
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
