Effects of antiferro-ferromagnetic phase coexistence and spin fluctuations on the magnetic and related properties of NdCuSi
Polycrystalline NdCuSi is found to show co-existence of antiferromagnetic (AFM) and ferromagnetic (FM) phases at low temperatures, as revealed by neutron diffraction data. The coexistence is attributed to the competing exchange interactions and crystal field effect. The compound shows a large, low-f...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2015-06-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/1.4922387 |
| _version_ | 1818263155484131328 |
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| author | Sachin Gupta K. G. Suresh A. Das A. K. Nigam A. Hoser |
| author_facet | Sachin Gupta K. G. Suresh A. Das A. K. Nigam A. Hoser |
| author_sort | Sachin Gupta |
| collection | DOAJ |
| description | Polycrystalline NdCuSi is found to show co-existence of antiferromagnetic (AFM) and ferromagnetic (FM) phases at low temperatures, as revealed by neutron diffraction data. The coexistence is attributed to the competing exchange interactions and crystal field effect. The compound shows a large, low-field magnetoresistance (MR) of ∼ − 32% at 20 kOe below TN (3.1 K), which becomes ∼ − 36% at 50 kOe. The MR value at 50 kOe is found to be the highest among the RTX compounds. Magnetocaloric effect (MCE) is also found to show a large value of ∼11 J/kg K close to TN. Resistivity data show the presence of spin fluctuations, which get suppressed by the applied field. Large MR and MCE in this compound arise due to the coexistence of the two phases. The field dependencies of MR and MCE show quadratic behavior, confirming the presence of spin fluctuations. |
| first_indexed | 2024-12-12T19:14:31Z |
| format | Article |
| id | doaj.art-8323f89d9b994b14ac5255fa73cd7b18 |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-12-12T19:14:31Z |
| publishDate | 2015-06-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-8323f89d9b994b14ac5255fa73cd7b182022-12-22T00:14:45ZengAIP Publishing LLCAPL Materials2166-532X2015-06-0136066102066102-710.1063/1.4922387004506APMEffects of antiferro-ferromagnetic phase coexistence and spin fluctuations on the magnetic and related properties of NdCuSiSachin Gupta0K. G. Suresh1A. Das2A. K. Nigam3A. Hoser4Department of Physics, Indian Institute of Technology Bombay, Mumbai 400076, IndiaDepartment of Physics, Indian Institute of Technology Bombay, Mumbai 400076, IndiaSolid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, IndiaTata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, IndiaHelmholtz-Zentrum Berlin, Hahn-Meitner Platz 1, 14-109 Berlin, GermanyPolycrystalline NdCuSi is found to show co-existence of antiferromagnetic (AFM) and ferromagnetic (FM) phases at low temperatures, as revealed by neutron diffraction data. The coexistence is attributed to the competing exchange interactions and crystal field effect. The compound shows a large, low-field magnetoresistance (MR) of ∼ − 32% at 20 kOe below TN (3.1 K), which becomes ∼ − 36% at 50 kOe. The MR value at 50 kOe is found to be the highest among the RTX compounds. Magnetocaloric effect (MCE) is also found to show a large value of ∼11 J/kg K close to TN. Resistivity data show the presence of spin fluctuations, which get suppressed by the applied field. Large MR and MCE in this compound arise due to the coexistence of the two phases. The field dependencies of MR and MCE show quadratic behavior, confirming the presence of spin fluctuations.http://dx.doi.org/10.1063/1.4922387 |
| spellingShingle | Sachin Gupta K. G. Suresh A. Das A. K. Nigam A. Hoser Effects of antiferro-ferromagnetic phase coexistence and spin fluctuations on the magnetic and related properties of NdCuSi APL Materials |
| title | Effects of antiferro-ferromagnetic phase coexistence and spin fluctuations on the magnetic and related properties of NdCuSi |
| title_full | Effects of antiferro-ferromagnetic phase coexistence and spin fluctuations on the magnetic and related properties of NdCuSi |
| title_fullStr | Effects of antiferro-ferromagnetic phase coexistence and spin fluctuations on the magnetic and related properties of NdCuSi |
| title_full_unstemmed | Effects of antiferro-ferromagnetic phase coexistence and spin fluctuations on the magnetic and related properties of NdCuSi |
| title_short | Effects of antiferro-ferromagnetic phase coexistence and spin fluctuations on the magnetic and related properties of NdCuSi |
| title_sort | effects of antiferro ferromagnetic phase coexistence and spin fluctuations on the magnetic and related properties of ndcusi |
| url | http://dx.doi.org/10.1063/1.4922387 |
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