Light-scattering study of phonon-magnon coupling in antiferromagnetic FeCl2. 2H2O
Raman spectroscopy has been used to study the phonon-magnon coupling in the antiferromagnetic phase of ferrous chloride dihydrate. The interaction has been studied as a function of temperature, from 2 K to TN=23 K, and applied field, from 0 to 28 kG. The phonon is assigned as a Bg symmetry libration...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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1975
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| _version_ | 1797053800527167488 |
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| author | Kinne, R O'Sullivan, W Ryan, J Scott, J |
| author_facet | Kinne, R O'Sullivan, W Ryan, J Scott, J |
| author_sort | Kinne, R |
| collection | OXFORD |
| description | Raman spectroscopy has been used to study the phonon-magnon coupling in the antiferromagnetic phase of ferrous chloride dihydrate. The interaction has been studied as a function of temperature, from 2 K to TN=23 K, and applied field, from 0 to 28 kG. The phonon is assigned as a Bg symmetry libration mode, in accord with the predictions of Torrance and Slonczewski; it is found to be "soft," decreasing in energy as T→0. The phonon-magnon coupling constant is nearly field independent but decreases to zero at TN. It is found that no zero-field splitting of the magnon occurs, within 0.2-cm-1 instrumental resolution, in contrast to the 0.8-cm-1 splitting inferred from the infrared spectrum. The magnon g value is determined to be 1.7 ± 0.1, in contrast to Torrance's value of 2.23 ± 0.02. © 1975 The American Physical Society. |
| first_indexed | 2024-03-06T18:48:39Z |
| format | Journal article |
| id | oxford-uuid:0f686af5-55a1-4b4a-af6e-7643e7a6a1d8 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:48:39Z |
| publishDate | 1975 |
| record_format | dspace |
| spelling | oxford-uuid:0f686af5-55a1-4b4a-af6e-7643e7a6a1d82022-03-26T09:51:03ZLight-scattering study of phonon-magnon coupling in antiferromagnetic FeCl2. 2H2OJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0f686af5-55a1-4b4a-af6e-7643e7a6a1d8EnglishSymplectic Elements at Oxford1975Kinne, RO'Sullivan, WRyan, JScott, JRaman spectroscopy has been used to study the phonon-magnon coupling in the antiferromagnetic phase of ferrous chloride dihydrate. The interaction has been studied as a function of temperature, from 2 K to TN=23 K, and applied field, from 0 to 28 kG. The phonon is assigned as a Bg symmetry libration mode, in accord with the predictions of Torrance and Slonczewski; it is found to be "soft," decreasing in energy as T→0. The phonon-magnon coupling constant is nearly field independent but decreases to zero at TN. It is found that no zero-field splitting of the magnon occurs, within 0.2-cm-1 instrumental resolution, in contrast to the 0.8-cm-1 splitting inferred from the infrared spectrum. The magnon g value is determined to be 1.7 ± 0.1, in contrast to Torrance's value of 2.23 ± 0.02. © 1975 The American Physical Society. |
| spellingShingle | Kinne, R O'Sullivan, W Ryan, J Scott, J Light-scattering study of phonon-magnon coupling in antiferromagnetic FeCl2. 2H2O |
| title | Light-scattering study of phonon-magnon coupling in antiferromagnetic FeCl2. 2H2O |
| title_full | Light-scattering study of phonon-magnon coupling in antiferromagnetic FeCl2. 2H2O |
| title_fullStr | Light-scattering study of phonon-magnon coupling in antiferromagnetic FeCl2. 2H2O |
| title_full_unstemmed | Light-scattering study of phonon-magnon coupling in antiferromagnetic FeCl2. 2H2O |
| title_short | Light-scattering study of phonon-magnon coupling in antiferromagnetic FeCl2. 2H2O |
| title_sort | light scattering study of phonon magnon coupling in antiferromagnetic fecl2 2h2o |
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