NDLI: Investigation of Ba$_{2}$Me$_{2}$Fe$_{12}$O$_{22}$ (M = Co, Zn) hexaferrite based on external magnetic field Mössbauer spectroscopy

Content Provider	Springer Nature Link
Author	Lim, Jung Tae Kim, Chul Sung Lee, Young Bae
Copyright Year	2014
Abstract	Polycrystalline Ba$_{2}$Me$_{2}$Fe$_{12}$O$_{22}$ (Me = Co, Zn) samples were prepared by using a solid-state reaction method. The crystal structures of samples were determined to be rhombohedral with space group (R-3m). Based on the magnetic hysteresis curves up to 10 kOe at 4.2 K, we found the saturation magnetization (M $_{ s }$) of Ba$_{2}$Me$_{2}$Fe$_{12}$O$_{22}$ (Me = Co, Zn) samples to be M $_{ s }$ = 33.2, and 68.6 emu/g, respectively. From the zero-field-cooled (ZFC) magnetization curves under 100 Oe between at temperatures 4.2 K and 740 K, the Curie temperature (T $_{ C }$) was found to be decrease with increasing Zn contents. Zero-field Mössbauer spectra of the samples were taken at various temperatures ranging from 4.2 to 750 K. The isomer shift values of samples showed that the charge states were Fe$^{3+}$ high spin. From the Mössbauer spectra taken at 4.2 K with external field ranging from 0 to 50 kOe, the canting angles between the external field and the hyperfine field of samples containing Co and Zn were φ = 34 and 17°, respectively.
Starting Page	1419
Ending Page	1422
Page Count	4
File Format	PDF
ISSN	03744884
Journal	Journal of the Korean Physical Society
Volume Number	65
Issue Number	9
e-ISSN	19768524
Language	English
Publisher	The Korean Physical Society
Publisher Date	2014-11-20
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Canting angle Spin transition Theoretical, Mathematical and Computational Physics Mössbauer spectroscopy Physics Particle and Nuclear Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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