Structural transformation and magnetic competition in Yb(Mn1−xFex)O3
Loading...
Access rights
openAccess
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Date
2007
Department
Major/Subject
Mcode
Degree programme
Language
en
Pages
1-5
Series
PHYSICAL REVIEW B, Volume 76, issue 17
Abstract
Structural and magnetic properties of the Yb(Mn1−xFex)O3 (0⩽x⩽1) system have been systematically investigated. Initial samples were prepared via a sol-gel method. A pure hexagonal phase was only obtained for samples with x⩽0.5. With high-pressure annealing, a pure orthorhombic perovskite phase was achieved for all the compositions. The 57Fe Mössbauer spectrum for x=0.5 shows that only Fe3+ ions exist in the system; there was no evidence of chemical inhomogeneities. With increasing x, the Néel temperature TN increases for both hexagonal and orthorhombic phases. The orthorhombic Yb(Mn0.5Fe0.5)O3 shows an interesting weak ferromagnetic state in the temperature range of 239–298K, the ferromagnetism disappearing abruptly on cooling below Tt=239K. The transition at Tt appears to be a reorientation of the spin axis of a type-G antiferromagnetic order from the orthorhombic a axis to the b axis in the (010) plane.Description
Keywords
Other note
Citation
Huang , Y H , Karppinen , M , Imamura , N , Yamauchi , H & Goodenough , J B 2007 , ' Structural transformation and magnetic competition in Yb(Mn1−xFex)O3 ' , Physical Review B , vol. 76 , no. 17 , 174405 , pp. 1-5 . https://doi.org/10.1103/PhysRevB.76.174405