NDLI: Magnetic Characterization and Low-Temperature Heat Transport Properties of the Orthoferrites <italic>R</italic>FeO<sub>3</sub> (<inline-formula> <tex-math notation=LaTeX>$R =$ </tex-math></inline-formula> Rare Earth) Single Crystals

Content Provider	IEEE Xplore Digital Library
Author	Fabao Zhang Shujuan Li Junda Song Jun Shi Xuefeng Sun
Copyright Year	1965
Abstract	We have studied the magnetic characterization and low-temperature heat transport properties of the orthoferrites RFeO₃ (R = Gd, Dy, Ho, and Y) single crystals. At 40-60 K, the M-T curves with H = 0.1 T (// c) in HoFeO₃ and DyFeO₃ show distinct step-like transitions, which are caused by the spin-reorientation transition of Fe³⁺. The magnetization and specific heat indicate that GdFeO₃ and DyFeO₃ have the antiferromagnetic order of R³⁺ at 2.2 and 4.1 K, respectively, while HoFeO₃ does not exhibit the antiferromagnetic order of R³⁺ at temperatures down to 2 K. Applying the magnetic field along the c-axis, the magnetic structures of R³⁺ or Fe³⁺ can be changed for DyFeO₃ and GdFeO₃. The thermal conductivities (k) of these materials display obvious differences. In particular, the k(T) curve of HoFeO₃ shows a broad concave at 40-140 K, which is caused by the resonant phonon scattering by Ho³⁺. These results point to the clear difference in the interaction between R³⁺ and Fe³⁺ ions among these materials.
Sponsorship	IEEE Magnetics Society
Starting Page	1
Ending Page	4
Page Count	4
File Size	629875
File Format	PDF
ISSN	00189464
Volume Number	51
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heating Phonons Crystals Magnetic resonance Scattering Thermal conductivity Conductivity thermal conductivity orthoferrites antiferromagnetic order spin reorientation Antiferromagnetic order
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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