Magnetic and electrical properties of Cr substituted Ni nano ferrites
Nano-ferrites with composition NiCrxFe2-xO4 (where x = 0.1, 0.3, 0.5, 0.7, 0.9, 1.0) were synthesized through citrate-gel auto combustion technique at moderately low temperature. X-ray analysis shows cubic spinel structure single phase without any impurity peak and average crystallite size in the ra...
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| Format: | Article |
| Language: | English |
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University of Novi Sad
2018-03-01
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| Series: | Processing and Application of Ceramics |
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| Online Access: | http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2039%2001.pdf |
| _version_ | 1818535103111888896 |
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| author | Katrapally Vijaya Kumar Rapolu Sridhar Dachepalli Ravinder |
| author_facet | Katrapally Vijaya Kumar Rapolu Sridhar Dachepalli Ravinder |
| author_sort | Katrapally Vijaya Kumar |
| collection | DOAJ |
| description | Nano-ferrites with composition NiCrxFe2-xO4 (where x = 0.1, 0.3, 0.5, 0.7, 0.9, 1.0) were synthesized through citrate-gel auto combustion technique at moderately low temperature. X-ray analysis shows cubic spinel structure single phase without any impurity peak and average crystallite size in the range 8.5–10.5 nm. Magnetic properties were measured using a vibrating sample magnetometer at room temperature in the applied field of ±6 KOe. The obtained M-H loop area is very narrow, hence the synthesized nano ferrites are soft magnetic materials with small coercivity. Magnetic parameters such as saturation magnetization (Ms), coercivity (Hc), remanent magnetization (Mr) and residual magnetization were measured and discussed with regard to Cr3+ ion concentration. Electrical properties were measured using two probe method from room temperature to well beyond transition temperature. The DC resistivity variation with temperature shows the semiconductor nature. Resistivity, drift mobility and activation energy values are measured and discussed with regard to composition. The Curie temperature was determined using DC resistivity data and Loria-Sinha method. The observed results can be explained in detail on the basis of composition. |
| first_indexed | 2024-12-11T18:20:22Z |
| format | Article |
| id | doaj.art-146be54baac74edbaaf7486525cbbe1b |
| institution | Directory Open Access Journal |
| issn | 1820-6131 2406-1034 |
| language | English |
| last_indexed | 2024-12-11T18:20:22Z |
| publishDate | 2018-03-01 |
| publisher | University of Novi Sad |
| record_format | Article |
| series | Processing and Application of Ceramics |
| spelling | doaj.art-146be54baac74edbaaf7486525cbbe1b2022-12-22T00:55:16ZengUniversity of Novi SadProcessing and Application of Ceramics1820-61312406-10342018-03-011211710.2298/PAC1801001VMagnetic and electrical properties of Cr substituted Ni nano ferritesKatrapally Vijaya Kumar0Rapolu Sridhar1Dachepalli Ravinder2Department of Physics, JNTUH College of Engineering Sultanpur, Sultanpur (V), Pulkal (M), Sangareddy-Dist. 502293 Telangana State, IndiaDepartment of BS&H, Vignan Institute of Technology & Science, Yadadri-Bhuvanagiri-Dist.508284, Telangana State, IndiaDepartment of Physics, Osmania University, Hyderabad-500007, Telangana State, IndiaNano-ferrites with composition NiCrxFe2-xO4 (where x = 0.1, 0.3, 0.5, 0.7, 0.9, 1.0) were synthesized through citrate-gel auto combustion technique at moderately low temperature. X-ray analysis shows cubic spinel structure single phase without any impurity peak and average crystallite size in the range 8.5–10.5 nm. Magnetic properties were measured using a vibrating sample magnetometer at room temperature in the applied field of ±6 KOe. The obtained M-H loop area is very narrow, hence the synthesized nano ferrites are soft magnetic materials with small coercivity. Magnetic parameters such as saturation magnetization (Ms), coercivity (Hc), remanent magnetization (Mr) and residual magnetization were measured and discussed with regard to Cr3+ ion concentration. Electrical properties were measured using two probe method from room temperature to well beyond transition temperature. The DC resistivity variation with temperature shows the semiconductor nature. Resistivity, drift mobility and activation energy values are measured and discussed with regard to composition. The Curie temperature was determined using DC resistivity data and Loria-Sinha method. The observed results can be explained in detail on the basis of composition.http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2039%2001.pdfNi-Cr ferritescitrate-gel methodXRDmagnetic propertieselectrical properties |
| spellingShingle | Katrapally Vijaya Kumar Rapolu Sridhar Dachepalli Ravinder Magnetic and electrical properties of Cr substituted Ni nano ferrites Processing and Application of Ceramics Ni-Cr ferrites citrate-gel method XRD magnetic properties electrical properties |
| title | Magnetic and electrical properties of Cr substituted Ni nano ferrites |
| title_full | Magnetic and electrical properties of Cr substituted Ni nano ferrites |
| title_fullStr | Magnetic and electrical properties of Cr substituted Ni nano ferrites |
| title_full_unstemmed | Magnetic and electrical properties of Cr substituted Ni nano ferrites |
| title_short | Magnetic and electrical properties of Cr substituted Ni nano ferrites |
| title_sort | magnetic and electrical properties of cr substituted ni nano ferrites |
| topic | Ni-Cr ferrites citrate-gel method XRD magnetic properties electrical properties |
| url | http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2039%2001.pdf |
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