Acta Metallurgica Sinica (English Letters) ›› 2015, Vol. 28 ›› Issue (3): 367-372.DOI: 10.1007/s40195-015-0207-y
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Nikolay Velinov1(), Dimitar Dimitrov2, Kremena Koleva1, Krassimir Ivanov2, Ivan Mitov1
Received:
2014-05-13
Revised:
2014-08-24
Online:
2015-01-13
Published:
2015-07-23
Nikolay Velinov, Dimitar Dimitrov, Kremena Koleva, Krassimir Ivanov, Ivan Mitov. Mechanochemical Synthesis and Characterization of Nanocrystalline Copper-Cobalt Ferrites[J]. Acta Metallurgica Sinica (English Letters), 2015, 28(3): 367-372.
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Sample | Components | δ (mm/s) | Δ (mm/s) | B (T) | Γ exp (mm/s) | G (%) |
---|---|---|---|---|---|---|
Cu0.2Co0.8Fe2O4-MS1 | Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.37 | 0.70 | - | 0.50 | 76 |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.27 | 0.82 | - | 0.53 | 24 | |
Cu0.2Co0.8Fe2O4-MS2 | Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.37 | 0.71 | - | 0.53 | 74 |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.27 | 0.79 | - | 0.56 | 26 | |
Cu0.8Co0.2Fe2O4-MS1 | Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.37 | 0.75 | - | 0.49 | 72 |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.27 | 0.95 | - | 0.57 | 28 | |
Cu0.8Co0.2Fe2O4-MS2 | Sx1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.37 | 0.00 | 47.0 | 0.75 | 3 |
Sx2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.27 | 0.00 | 44.0 | 0.75 | 2 | |
Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.37 | 0.75 | - | 0.50 | 71 | |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.27 | 0.99 | - | 0.54 | 24 | |
Cu0.2Co0.8Fe2O4-MS1 LNT | Sx1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.00 | 42.8 | 2.00 | 36 |
Sx2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.00 | 37.0 | 1.90 | 40 | |
Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.70 | - | 0.78 | 18 | |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.82 | - | 0.70 | 6 | |
Cu0.2Co0.8Fe2O4-MS2 LNT | Sx1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.00 | 45.4 | 1.05 | 49 |
Sx2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.00 | 37.7 | 1.50 | 38 | |
Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.70 | - | 0.72 | 11 | |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.82 | - | 0.55 | 2 | |
Cu0.8Co0.2Fe2O4-MS1 LNT | Sx1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.00 | 49.7 | 0.80 | 5 |
Sx2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.00 | 45.0 | 0.80 | 2 | |
Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.75 | - | 0.51 | 68 | |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.95 | - | 0.57 | 25 | |
Cu0.8Co0.2Fe2O4-MS2 LNT | Sx1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.00 | 49.9 | 0.80 | 11 |
Sx2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.00 | 46.0 | 0.80 | 5 | |
Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.76 | - | 0.51 | 52 | |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.95 | - | 0.65 | 32 |
Table 1 Parameters of Mössbauer spectra of the investigated samples at RT and LNT
Sample | Components | δ (mm/s) | Δ (mm/s) | B (T) | Γ exp (mm/s) | G (%) |
---|---|---|---|---|---|---|
Cu0.2Co0.8Fe2O4-MS1 | Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.37 | 0.70 | - | 0.50 | 76 |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.27 | 0.82 | - | 0.53 | 24 | |
Cu0.2Co0.8Fe2O4-MS2 | Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.37 | 0.71 | - | 0.53 | 74 |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.27 | 0.79 | - | 0.56 | 26 | |
Cu0.8Co0.2Fe2O4-MS1 | Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.37 | 0.75 | - | 0.49 | 72 |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.27 | 0.95 | - | 0.57 | 28 | |
Cu0.8Co0.2Fe2O4-MS2 | Sx1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.37 | 0.00 | 47.0 | 0.75 | 3 |
Sx2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.27 | 0.00 | 44.0 | 0.75 | 2 | |
Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.37 | 0.75 | - | 0.50 | 71 | |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.27 | 0.99 | - | 0.54 | 24 | |
Cu0.2Co0.8Fe2O4-MS1 LNT | Sx1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.00 | 42.8 | 2.00 | 36 |
Sx2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.00 | 37.0 | 1.90 | 40 | |
Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.70 | - | 0.78 | 18 | |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.82 | - | 0.70 | 6 | |
Cu0.2Co0.8Fe2O4-MS2 LNT | Sx1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.00 | 45.4 | 1.05 | 49 |
Sx2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.00 | 37.7 | 1.50 | 38 | |
Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.70 | - | 0.72 | 11 | |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.82 | - | 0.55 | 2 | |
Cu0.8Co0.2Fe2O4-MS1 LNT | Sx1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.00 | 49.7 | 0.80 | 5 |
Sx2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.00 | 45.0 | 0.80 | 2 | |
Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.75 | - | 0.51 | 68 | |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.95 | - | 0.57 | 25 | |
Cu0.8Co0.2Fe2O4-MS2 LNT | Sx1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.00 | 49.9 | 0.80 | 11 |
Sx2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.00 | 46.0 | 0.80 | 5 | |
Db1-\( {\text{Fe}}_{\text{octa}}^{ 3+ } \) | 0.48 | 0.76 | - | 0.51 | 52 | |
Db2-\( {\text{Fe}}_{\text{tetra}}^{ 3+ } \) | 0.38 | 0.95 | - | 0.65 | 32 |
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