Crystal structure and magnetic properties of Bi1-x Ca x Fe1-x Mn(Ti) x O3 ceramics across the phase boundary

被引：12

作者：

Karpinsky, D. V. ^{[1
,2
]}

Troyanchuk, I. O. ^{[1
]}

Bushinsky, M. V. ^{[2
]}

Gavrilov, S. A. ^{[1
]}

Silibin, M. V. ^{[1
]}

Franz, A. ^{[3
]}

机构：

[1] Natl Res Univ Elect Technol MIET, Moscow 124498, Russia

[2] NAS Belarus, Sci Pract Mat Res Ctr, Minsk 220072, BELARUS

[3] Helmholtz Zentrum Berlin Mat & Energy, Berlin, Germany

来源：

JOURNAL OF MATERIALS SCIENCE | 2016年 / 51卷 / 23期

基金：

俄罗斯科学基金会;

关键词：

DOPED BIFEO3 CERAMICS; SINGLE-PHASE; TRANSITIONS; TEMPERATURE; EVOLUTION;

D O I：

10.1007/s10853-016-0271-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Crystal structure and magnetic properties of BiFeO3 compounds co-doped with Ca and Mn ions as well as Ca and Ti ones were studied using diffraction and magnetometry techniques. Crystal structure of the Bi1-x Ca (x) Fe1-x Mn (x) O-3 ceramics with x < 0.19 was attested to be single phase rhombohedral one, structural data obtained for the compounds co-doped with Ca and Ti ions testify stability of the polar rhombohedral state up to the concentration level of 25 %. Co-doping with Ca and Mn ions gradually modifies magnetic structure of the compounds toward weak ferromagnetic one; there is no correlation observed between the type of structural distortion and magnetic structure of the compounds. The Bi1-x Ca (x) Fe1-x Mn (x) O-3 compounds with x > 0.25 show complex magnetic behavior associated with the coexistence of antiferromagnetic matrix and magnetic clusters. Compounds co-doped with Ca and Ti ions with rhombohedral structure testify nearly three times larger remnant magnetization as compared with that observed for Ca|Mn-doped series, and magnetic state of the compounds with x > 0.1 remains to be homogeneous weak ferromagnetic one up to x similar to 0.3, and above this concentration, magnetic structure is disrupted because of diamagnetic dilution.

引用

页码：10506 / 10514

页数：9

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