INVESTIGATION OF MAGNETIC FRUSTRATION IN A(2)FEMO(6) (A=CA, SR, BA, M=NB, TA, SB) BY MAGNETOMETRY AND MOSSBAUER-SPECTROSCOPY

被引：107

作者：

BATTLE, PD ^{[1
]}

GIBB, TC ^{[1
]}

HEROD, AJ ^{[1
]}

KIM, SH ^{[1
]}

MUNNS, PH ^{[1
]}

机构：

[1] UNIV LEEDS,SCH CHEM,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1995年 / 5卷 / 06期

关键词：

D O I：

10.1039/jm9950500865

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Perovskite-related compounds in the series A(2)FeMO(6) (A=Ca, Sr, Ba; M=Nb, Ta, Sb) have been prepared using the standard techniques of solid state chemistry and characterized by X-ray powder diffraction, magnetometry and Mossbauer spectroscopy. All but the 6H hexagonal compound Ba2FeSbO6 adopt cubic or pseudo-cubic crystal structures and show a magnetic susceptibility maximum at ca. 25 K. Field cooled and zero-field cooled susceptibility data show a hysteresis below this maximum. The Mossbauer spectra recorded at 4.2 K comprise a single magnetic hyperfine pattern typical of Fe3+, but with a high degree of line broadening. The spectra show a relaxational (non-Brillouin) collapse above 20 K. The data are described in terms of spin-glass behaviour and the factors controlling the magnetic properties are discussed.

引用

页码：865 / 870

页数：6

共 13 条

[1] THE CRYSTAL-STRUCTURE AND MAGNETIC-PROPERTIES OF SRLAFESNO6 AND SRLANISBO6 [J].