Evolution of structure and magnetic properties for BaFe11.9Al0.1O19 hexaferrite in a wide temperature range

被引：112

作者：

Trukhanov, A. V. ^{[1
,2
]}

Trukhanov, S. V. ^{[1
,2
]}

Panina, L. V. ^{[1
]}

Kostishyn, V. G. ^{[1
]}

Kazakevich, I. S. ^{[2
]}

Trukhanov, An. V. ^{[1
,2
]}

Trukhanov, E. L. ^{[2
]}

Natarov, V. O. ^{[2
]}

Turchenko, V. A. ^{[3
,4
]}

Salem, M. M. ^{[1
]}

Balagurov, A. M. ^{[3
]}

机构：

[1] Natl Univ Sci & Technol MISiS, Leninsky Prospekt 4, Moscow 119049, Russia

[2] SSPA Sci & Pract Mat Res Ctr NAS Belarus, Brovki Str19, Minsk 220072, BELARUS

[3] Joint Inst Nucl Res, Joliot Curie Str, Dubna 141980, Russia

[4] Donetsk Inst Phys & Technol, 72 R Luxemburg Str, UA-83114 Donetsk, Ukraine

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2017年 / 426卷

关键词：

Barium hexaferrites; Multiferroic; Magnetization; Polarization; Magnetoelectrical effect; Pyroelectricity; Neutron Diffraction; PHASE-TRANSITIONS; CRYSTAL-STRUCTURE; BARIUM FERRITE; BAFE12O19; FERROELECTRICITY; BA; NANOPARTICLES; MANGANITE; STATE;

D O I：

10.1016/j.jmmm.2016.10.140

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

M-type BaFe11.9Al0.1O19 hexaferrite was successfully synthesized by solid state reactions. Precision investigations of crystal and magnetic structures of BaFe11.9Al0.1O19 powder by neutron diffraction in the temperature range 4.2-730 K have been performed. Magnetic and electrical properties investigations were carried out in the wide temperature range. Neutron powder diffraction data were successfully refined in approximation for both space groups (SG): centrosymmetric # 194 (standard non-polar phase) and non-centrosymmetric # 186 (polar phase). It has been shown that at low temperatures (below room temperature) better fitting results (value chi(2)) were for the polar phase (SG: # 186) or for the two phases coexistence (SG: # 186 and SG: # 194). At high temperatures (400-730 K) better fitting results were for SG: # 194. It was established coexistence of the dual ferroic properties (specific magnetization and spontaneous polarization) at room temperature. Strong correlation between magnetic and electrical subsystems was demonstrated (magnetoelectrical effect). Temperature dependences of the spontaneous polarization, specific magnetization and magnetoelectrical effect were investigated.

引用

页码：487 / 496

页数：10

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