TY  - JOUR
AU  - Fu, Zhendong
AU  - Nair, Harikrishnan S.
AU  - Xiao, Yinguo
AU  - Senyshyn, Anatoliy
AU  - Pomjakushin, Vladimir Y.
AU  - Feng, Erxi
AU  - Su, Yixi
AU  - Jin, Wentao
AU  - Brückel, Thomas
TI  - Magnetic structures and magnetoelastic coupling of Fe-doped hexagonal manganites LuMn$_{1 − x}$ Fe$_{x}$O$_{3}$ (0 ≤ x ≤ 0.3)
JO  - Physical review / B
VL  - 94
IS  - 12
SN  - 2469-9950
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2016-05340
SP  - 125150
PY  - 2016
AB  - We have studied the crystal and magnetic structures of Fe-doped hexagonal manganites LuMn1−xFexO3(x=0,0.1,0.2, and 0.3) by using bulk magnetization and neutron powder diffraction methods. The samples crystalize consistently in a hexagonal structure and maintain the space group P63cm from 2 to 300 K. The Néel temperature TN increases continuously with increasing Fe doping. In contrast to a single Γ4 representation in LuMnO3, the magnetic ground state of the Fe-doped samples can only be described with a combination of Γ3(P63′cm′) and Γ4(P63′c′m) irreducible representations, whose contributions have been quantitatively estimated. The drastic effect of Fe doping is highlighted by composition-dependent spin reorientations. A phase diagram of the entire composition series is proposed based on the present result and those reported in literature. Our result demonstrates the importance of tailoring compositions in increasing magnetic transition temperatures of multiferroic systems.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000385048000003
DO  - DOI:10.1103/PhysRevB.94.125150
UR  - https://juser.fz-juelich.de/record/819744
ER  -