An investigation of structural, magnetic and dielectric properties of R{sub 2}NiMnO{sub 6} (R = rare earth, Y)
We have investigated the structure, magnetic and dielectric properties of the double perovskite oxides, R{sub 2}NiMnO{sub 6} (R = Pr, Nd, Sm, Gd, Tb, Dy, Ho and Y). We could refine powder X-ray diffraction patterns of all the phases on the basis of monoclinic (P2{sub 1}/n) double perovskite structur...
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| Veröffentlicht in: | Materials research bulletin 2009-07, Vol.44 (7) |
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| container_title | Materials research bulletin |
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| creator | Booth, R.J. Fillman, R. Whitaker, H. Nag, Abanti Tiwari, R.M. Ramanujachary, K.V. Gopalakrishnan, J. Lofland, S.E. |
| description | We have investigated the structure, magnetic and dielectric properties of the double perovskite oxides, R{sub 2}NiMnO{sub 6} (R = Pr, Nd, Sm, Gd, Tb, Dy, Ho and Y). We could refine powder X-ray diffraction patterns of all the phases on the basis of monoclinic (P2{sub 1}/n) double perovskite structure where Ni and Mn atoms are ordered at 2c and 2d sites, respectively. All the phases are ferromagnetic insulators exhibiting relatively low dielectric loss and dielectric constants in the range 15-25. The ferromagnetic ordering temperature of the R{sub 2}NiMnO{sub 6} series seems to correlate better with the radius of R{sup 3+} atoms than with the average Ni-O-Mn angle ({phi}) in the double perovskite structure. These results are consistent with all samples having Mn{sup 4+} and Ni{sup 2+} with minimal antisite disorder. |
| doi_str_mv | 10.1016/J.MATERRESBULL.2009.02.003 |
| format | Article |
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We could refine powder X-ray diffraction patterns of all the phases on the basis of monoclinic (P2{sub 1}/n) double perovskite structure where Ni and Mn atoms are ordered at 2c and 2d sites, respectively. All the phases are ferromagnetic insulators exhibiting relatively low dielectric loss and dielectric constants in the range 15-25. The ferromagnetic ordering temperature of the R{sub 2}NiMnO{sub 6} series seems to correlate better with the radius of R{sup 3+} atoms than with the average Ni-O-Mn angle ({phi}) in the double perovskite structure. These results are consistent with all samples having Mn{sup 4+} and Ni{sup 2+} with minimal antisite disorder.</description><identifier>ISSN: 0025-5408</identifier><identifier>EISSN: 1873-4227</identifier><identifier>DOI: 10.1016/J.MATERRESBULL.2009.02.003</identifier><language>eng</language><publisher>United States</publisher><subject>DIELECTRIC MATERIALS ; MAGNETIC PROPERTIES ; MANGANESE IONS ; MATERIALS SCIENCE ; MONOCLINIC LATTICES ; OXIDES ; PERMITTIVITY ; PEROVSKITE ; POWDERS ; RARE EARTHS ; X-RAY DIFFRACTION</subject><ispartof>Materials research bulletin, 2009-07, Vol.44 (7)</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/22029809$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Booth, R.J.</creatorcontrib><creatorcontrib>Fillman, R.</creatorcontrib><creatorcontrib>Whitaker, H.</creatorcontrib><creatorcontrib>Nag, Abanti</creatorcontrib><creatorcontrib>Tiwari, R.M.</creatorcontrib><creatorcontrib>Ramanujachary, K.V.</creatorcontrib><creatorcontrib>Gopalakrishnan, J.</creatorcontrib><creatorcontrib>Lofland, S.E.</creatorcontrib><title>An investigation of structural, magnetic and dielectric properties of R{sub 2}NiMnO{sub 6} (R = rare earth, Y)</title><title>Materials research bulletin</title><description>We have investigated the structure, magnetic and dielectric properties of the double perovskite oxides, R{sub 2}NiMnO{sub 6} (R = Pr, Nd, Sm, Gd, Tb, Dy, Ho and Y). 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We could refine powder X-ray diffraction patterns of all the phases on the basis of monoclinic (P2{sub 1}/n) double perovskite structure where Ni and Mn atoms are ordered at 2c and 2d sites, respectively. All the phases are ferromagnetic insulators exhibiting relatively low dielectric loss and dielectric constants in the range 15-25. The ferromagnetic ordering temperature of the R{sub 2}NiMnO{sub 6} series seems to correlate better with the radius of R{sup 3+} atoms than with the average Ni-O-Mn angle ({phi}) in the double perovskite structure. These results are consistent with all samples having Mn{sup 4+} and Ni{sup 2+} with minimal antisite disorder.</abstract><cop>United States</cop><doi>10.1016/J.MATERRESBULL.2009.02.003</doi></addata></record> |
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| ispartof | Materials research bulletin, 2009-07, Vol.44 (7) |
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| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | DIELECTRIC MATERIALS MAGNETIC PROPERTIES MANGANESE IONS MATERIALS SCIENCE MONOCLINIC LATTICES OXIDES PERMITTIVITY PEROVSKITE POWDERS RARE EARTHS X-RAY DIFFRACTION |
| title | An investigation of structural, magnetic and dielectric properties of R{sub 2}NiMnO{sub 6} (R = rare earth, Y) |
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