Magnetic moment directions and distributions of cations in Cr (Co) substituted spinel ferrites Ni0.7Fe2.3O4
Powder samples of the spinel ferrites MxNi0.7−xFe2.3O4 (M = Cr, Co and 0.0 ≤ x ≤ 0.3) and CrxNi0.7Fe2.3−xO4 (0.0 ≤ x ≤ 0.3) were synthesized using the chemical co-precipitation method. The XRD spectra confirmed that the samples had a single-phase cubic spinel structure. Magnetic measurements showed...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2015-09-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.4931919 |
| _version_ | 1811271891571179520 |
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| author | L. C. Xue L. L. Lang J. Xu Z. Z. Li W. H. Qi G. D. Tang L. Q. Wu |
| author_facet | L. C. Xue L. L. Lang J. Xu Z. Z. Li W. H. Qi G. D. Tang L. Q. Wu |
| author_sort | L. C. Xue |
| collection | DOAJ |
| description | Powder samples of the spinel ferrites MxNi0.7−xFe2.3O4 (M = Cr, Co and 0.0 ≤ x ≤ 0.3) and CrxNi0.7Fe2.3−xO4 (0.0 ≤ x ≤ 0.3) were synthesized using the chemical co-precipitation method. The XRD spectra confirmed that the samples had a single-phase cubic spinel structure. Magnetic measurements showed that the magnetic moments (μexp) per formula both at 10 K and 300 K increased with Co substitution, while the values of μexp decreased with Cr substitution. Applying the assumption that the magnetic moments of Cr2+ and Cr3+ lie antiparallel to those of the divalent and trivalent Fe, Co, and Ni cations in the same sublattice of spinel ferrites, these interesting behaviors could be easily interpreted. The cation distributions of the three series of samples were estimated successfully by fitting the dependences of μexp, measured at 10 K, on the doping level x, using a quantum-mechanical potential barrier model earlier proposed by our group. The results obtained for the Cr cation distributions at the (A) and [B] sites are very close to those obtained elsewhere using neutron diffraction. |
| first_indexed | 2024-04-12T22:30:23Z |
| format | Article |
| id | doaj.art-35d60a6a7a6b4098b9be2c8633096398 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-12T22:30:23Z |
| publishDate | 2015-09-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-35d60a6a7a6b4098b9be2c86330963982022-12-22T03:13:59ZengAIP Publishing LLCAIP Advances2158-32262015-09-0159097167097167-1810.1063/1.4931919072509ADVMagnetic moment directions and distributions of cations in Cr (Co) substituted spinel ferrites Ni0.7Fe2.3O4L. C. Xue0L. L. Lang1J. Xu2Z. Z. Li3W. H. Qi4G. D. Tang5L. Q. Wu6Hebei Advanced Thin Film Laboratory, Department of Physics, Hebei Normal University, Shijiazhuang City, 050024, People’s Republic of ChinaHebei Advanced Thin Film Laboratory, Department of Physics, Hebei Normal University, Shijiazhuang City, 050024, People’s Republic of ChinaHebei Advanced Thin Film Laboratory, Department of Physics, Hebei Normal University, Shijiazhuang City, 050024, People’s Republic of ChinaHebei Advanced Thin Film Laboratory, Department of Physics, Hebei Normal University, Shijiazhuang City, 050024, People’s Republic of ChinaHebei Advanced Thin Film Laboratory, Department of Physics, Hebei Normal University, Shijiazhuang City, 050024, People’s Republic of ChinaHebei Advanced Thin Film Laboratory, Department of Physics, Hebei Normal University, Shijiazhuang City, 050024, People’s Republic of ChinaHebei Advanced Thin Film Laboratory, Department of Physics, Hebei Normal University, Shijiazhuang City, 050024, People’s Republic of ChinaPowder samples of the spinel ferrites MxNi0.7−xFe2.3O4 (M = Cr, Co and 0.0 ≤ x ≤ 0.3) and CrxNi0.7Fe2.3−xO4 (0.0 ≤ x ≤ 0.3) were synthesized using the chemical co-precipitation method. The XRD spectra confirmed that the samples had a single-phase cubic spinel structure. Magnetic measurements showed that the magnetic moments (μexp) per formula both at 10 K and 300 K increased with Co substitution, while the values of μexp decreased with Cr substitution. Applying the assumption that the magnetic moments of Cr2+ and Cr3+ lie antiparallel to those of the divalent and trivalent Fe, Co, and Ni cations in the same sublattice of spinel ferrites, these interesting behaviors could be easily interpreted. The cation distributions of the three series of samples were estimated successfully by fitting the dependences of μexp, measured at 10 K, on the doping level x, using a quantum-mechanical potential barrier model earlier proposed by our group. The results obtained for the Cr cation distributions at the (A) and [B] sites are very close to those obtained elsewhere using neutron diffraction.http://dx.doi.org/10.1063/1.4931919 |
| spellingShingle | L. C. Xue L. L. Lang J. Xu Z. Z. Li W. H. Qi G. D. Tang L. Q. Wu Magnetic moment directions and distributions of cations in Cr (Co) substituted spinel ferrites Ni0.7Fe2.3O4 AIP Advances |
| title | Magnetic moment directions and distributions of cations in Cr (Co) substituted spinel ferrites Ni0.7Fe2.3O4 |
| title_full | Magnetic moment directions and distributions of cations in Cr (Co) substituted spinel ferrites Ni0.7Fe2.3O4 |
| title_fullStr | Magnetic moment directions and distributions of cations in Cr (Co) substituted spinel ferrites Ni0.7Fe2.3O4 |
| title_full_unstemmed | Magnetic moment directions and distributions of cations in Cr (Co) substituted spinel ferrites Ni0.7Fe2.3O4 |
| title_short | Magnetic moment directions and distributions of cations in Cr (Co) substituted spinel ferrites Ni0.7Fe2.3O4 |
| title_sort | magnetic moment directions and distributions of cations in cr co substituted spinel ferrites ni0 7fe2 3o4 |
| url | http://dx.doi.org/10.1063/1.4931919 |
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