Magnetizations and Mössbauer Spectra of YFe2O4-x
- 1 February 1981
- journal article
- research article
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 50 (2) , 438-444
- https://doi.org/10.1143/jpsj.50.438
Abstract
Effects of oxygen deficiency on magnetic properties of YFe 2 O 4- x ( x =0.00, 0.031, 0.040, 0.055 and 0.095) have been investigated by magnetization and Mössbauer effect measurements. When x ≧0.055, the compounds show so-called parasitic ferrimagnetism below 210 ∼220 K. When x ≦0.031, on the other hand, they undergo two successive first-order phase transitions at around 230 K and 190 K, without any thermoremanence at any temperature. The compound with x =0.040 exhibits intermediate characteristics. Lattice defects introduced by the oxygen deficiency are considered to play an important role in the disappearance of the first-order transitions and the appearance of the parasitic ferrimagnetism.Keywords
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