Electrical transport in iron phosphate glass-ceramics

doi:10.1016/j.jnoncrysol.2018.02.012

	Electrical transport in iron phosphate glass-ceramics
	Skoko, Zeljko 2; Gajovic, Andreja 3; Su, Dangsheng 4; Mogus-Milankovic, Andrea 1; Pavic, Luka 1
刊名	JOURNAL OF NON-CRYSTALLINE SOLIDS
	2018-12-15
卷号	502 页码:44-53
关键词	Iron phosphate glass Glass-ceramics Electrical transport Structural properties
ISSN号	0022-3093
DOI	10.1016/j.jnoncrysol.2018.02.012
通讯作者	Pavic, Luka(lpavic@irb.hr) ; Mogus-Milankovic, Andrea(mogus@irb.hr)
英文摘要	In this study, the effect of crystallization on electrical transport in iron phosphate glass with composition 40Fe(2)O(3)-60P(2)O(5) (mol%) was investigated. This type of glasses exhibits the electronic conduction which is described by polaronic conduction mechanism. Induced and controlled heat-treatment of 40Fe(2)O(3)-60P(2)O(5) glass leads to partially and almost fully crystallized glass-ceramics. The influence of heat-treatment temperature on structural changes, the appearance of crystalline phases, their interactions and influence on electrical transport were studied in details. Depending on heat-treatment temperature various phases, such as Fe-3(P2O7)(2), Fe-4(P2O2)(3) and Fe(PO3)(3), embedded in glass matrix, were confirmed by powder X-ray diffraction (XRPD) and Raman spectroscopy (RS), whereas thermally induced microstructural changes were evaluated by high-resolution transmission electron microscopy (HR-TEM). Impact of the structural changes on the electrical properties was explored by means of impedance spectroscopy (IS) in wide frequency and temperature range. DC conductivity decreases in the first stage of the crystallization process and achieves its minimum. With further increase of the heat -treatment temperature, the electrical conductivity rises as a result of an enhanced crystallinity. IS results show the evolution of crystallization and formation of crystalline phases in glassy matrix. Correlation between the shape of the spectra and the nature of the electrical transport was confirmed. Different electrical processes have been identified by detail analysis and contribution of each crystalline phase, glass matrix and grain boundaries to total resistance/conductivity is determined by complex impedance plots by means of equivalent circuit modeling.
资助项目	Croatian Science Foundation[IP-09-2014-5863]
WOS关键词	ELECTRONIC CONDUCTIVITY ; MAGNETIC-PROPERTIES ; VANADATE-PHOSPHATE ; CRYSTALLIZATION ; RAMAN ; NANOCRYSTALLIZATION ; VALENCE ; FEPO4
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000450380000005
资助机构	Croatian Science Foundation ; Croatian Science Foundation ; Croatian Science Foundation ; Croatian Science Foundation ; Croatian Science Foundation ; Croatian Science Foundation ; Croatian Science Foundation ; Croatian Science Foundation
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/166520]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Mogus-Milankovic, Andrea; Pavic, Luka
作者单位	1.Rudjer Boskovic Inst, Div Mat Chem, Bijenicka 54, HR-10000 Zagreb, Croatia 2.Univ Zagreb, Dept Phys, Fac Sci, Bijenicka 32, HR-10000 Zagreb, Croatia 3.Rudjer Boskovic Inst, Div Mat Phys, Bijenicka 54, HR-10000 Zagreb, Croatia 4.Chinese Acad Sci, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Skoko, Zeljko,Gajovic, Andreja,Su, Dangsheng,et al. Electrical transport in iron phosphate glass-ceramics[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2018,502:44-53.
APA	Skoko, Zeljko,Gajovic, Andreja,Su, Dangsheng,Mogus-Milankovic, Andrea,&Pavic, Luka.(2018).Electrical transport in iron phosphate glass-ceramics.JOURNAL OF NON-CRYSTALLINE SOLIDS,502,44-53.
MLA	Skoko, Zeljko,et al."Electrical transport in iron phosphate glass-ceramics".JOURNAL OF NON-CRYSTALLINE SOLIDS 502(2018):44-53.