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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Young Jun Hong Jun Sig Kum In-Bo Shim Chul Sung Kim |
| Copyright Year | 1965 |
| Abstract | The crystallographic and magnetic properties of Tb/sub 3/Fe/sub 5/O/sub 12/ were studied using X-ray diffraction, vibrating sample magnetometer (VSM), and Mo/spl uml/ssbauer spectroscopy. The crystal structure were found to have a single phase of garnet cubic structure, and the lattice constants of TbIG was found to be a/sub 0/=12.4364 /spl Aring/. The Rietveld refinement of X-ray pattern convinced that Tb ions fully occupied into the 24c site. The VSM measurements were performed in the temperature range from 30 to 700 K, which covers both the Ne/spl acute/el temperature (T/sub N/ = 560 /spl plusmn/ 5 K) and the compensation temperature (T/sub comp/ = 260 /spl plusmn/ 5 K). In order to elucidate magnetization on this sample, Mo/spl uml/ssbauer spectra of TbIG were measured at various absorber temperatures from 13 K to Ne/spl acute/el temperature. Over the compensation temperature, the Mo/spl uml/ssbauer spectrum for the sample was considered as a superposition of two sextets. However, below the compensation temperature, the spectrum of the sample showed an additional sharp sextet. Also, the additional set of spectrum persisted up to 260 K, and then disappeared above this temperature. This type of three iron sets in garnet system cannot be explained only by collinear magnetic moment or spin frustration. We suggest that this anomaly originates from the exchange interaction between the octahedral iron moment and the non collinear Tb moments. Temperature dependence of Mo/spl uml/ssbauer spectra at compensation point is closely related to noncollinear spin rotation. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 2808 |
| Ending Page | 2810 |
| Page Count | 3 |
| File Size | 166903 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 40 |
| Issue Number | 4 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-07-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Temperature distribution Iron Garnets Crystallography Magnetic properties X-ray diffraction Magnetometers Spectroscopy Lattices Performance evaluation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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