Magnetic properties of R $_{2}$ Fe $_{3}$ O $_{7}$ (R=Yb and Lu)

Yoshii, Kenji ; Ikeda, Naoshi*; Fukuyama, Ryota*; Nagata, Tomoko*; Kambe, Takashi*; Yoneda, Yasuhiro ; Fukuda, Tatsuo ; Mori, Shigeo*

We have investigated the magnetic properties of R $_{2}$ Fe $_{3}$ O $_{7}$ (R=Yb and Lu), which belongs to the homologous family of electronic ferroelectric RFe $_{2}$ O $_{4}$ . Magnetization measurements show ferrimagnetic ordering at the Neel temperature (T $_{N}$ ) of about 270 K, which is slightly higher than that of RFe $_{2}$ O $_{4}$ (T $_{N}$ about 230-250 K). Observation of spin glass and exchange bias shows a coexistence of ferromagnetic and antiferromagneticinteractions, similarly to RFe $_{2}$ O $_{4}$ . This situation gives rise to a complex magnetic change and a broad peak of magnetic entropy change. Some characteristics, such as refrigeration temperatures higher than in RFe $_{2}$ O $_{4}$ , seem to offer a possibility of this system to applications.

Language	:	English
Journal	:	Solid State Communications
Volume	:	173
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Pages	:	p.34 - 37
Publication Year/Month	:	2013/11
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Paper URL	:	https://doi.org/10.1016/j.ssc.2013.08.030
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Keywords	:	no keyword
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Registration No. : AA20130488
JAEA Abstracts No. : 41001440
Paper Submission No. : 13444

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Magnetic properties of RFeO (R=Yb and Lu)

Magnetic properties of R $_{2}$ Fe $_{3}$ O $_{7}$ (R=Yb and Lu)