Microstructure and metal-insulator transition in single crystalline KMo4O6
High quality KMo4O6 single crystals with tetragonal structure (space group P4/mbm) have been prepared by fused salt electrolysis. The crystals were studied by scanning electron microscopy (SEM), X-ray diffractometry, electrical resistivity, and magnetization measurements. X-ray powder diffraction pa...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2012-12-01
|
| Series: | Materials Research |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000600025 |
| _version_ | 1818348866094759936 |
|---|---|
| author | Margareth Andrade Mariana Lanzoni Maffei Leandro Marcos Salgado Alves Carlos Alberto Moreira dos Santos Bento Ferreira Antonio Fernando Sartori |
| author_facet | Margareth Andrade Mariana Lanzoni Maffei Leandro Marcos Salgado Alves Carlos Alberto Moreira dos Santos Bento Ferreira Antonio Fernando Sartori |
| author_sort | Margareth Andrade |
| collection | DOAJ |
| description | High quality KMo4O6 single crystals with tetragonal structure (space group P4/mbm) have been prepared by fused salt electrolysis. The crystals were studied by scanning electron microscopy (SEM), X-ray diffractometry, electrical resistivity, and magnetization measurements. X-ray powder diffraction patterns and SEM have given some information on the growth of single crystals. Electrical resistivity as a function of temperature shows that the KMo4O6 compound is a bad metal with resistivity change of approximately 30% in the temperature range from 2 to 300K. A metal-insulator transition (MIT), observed at approximately 110K, has been also confirmed for this material. Magnetization as a function of temperature agrees with previous report, however a magnetic ordering has been observed in M(H) curves in the whole temperature range. |
| first_indexed | 2024-12-13T17:56:51Z |
| format | Article |
| id | doaj.art-a127c37ceff1459a847643d27bdf5fb3 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-13T17:56:51Z |
| publishDate | 2012-12-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-a127c37ceff1459a847643d27bdf5fb32022-12-21T23:36:22ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392012-12-011569981002Microstructure and metal-insulator transition in single crystalline KMo4O6Margareth AndradeMariana Lanzoni MaffeiLeandro Marcos Salgado AlvesCarlos Alberto Moreira dos SantosBento FerreiraAntonio Fernando SartoriHigh quality KMo4O6 single crystals with tetragonal structure (space group P4/mbm) have been prepared by fused salt electrolysis. The crystals were studied by scanning electron microscopy (SEM), X-ray diffractometry, electrical resistivity, and magnetization measurements. X-ray powder diffraction patterns and SEM have given some information on the growth of single crystals. Electrical resistivity as a function of temperature shows that the KMo4O6 compound is a bad metal with resistivity change of approximately 30% in the temperature range from 2 to 300K. A metal-insulator transition (MIT), observed at approximately 110K, has been also confirmed for this material. Magnetization as a function of temperature agrees with previous report, however a magnetic ordering has been observed in M(H) curves in the whole temperature range.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000600025KMo4O6single crystallow-dimensional system |
| spellingShingle | Margareth Andrade Mariana Lanzoni Maffei Leandro Marcos Salgado Alves Carlos Alberto Moreira dos Santos Bento Ferreira Antonio Fernando Sartori Microstructure and metal-insulator transition in single crystalline KMo4O6 Materials Research KMo4O6 single crystal low-dimensional system |
| title | Microstructure and metal-insulator transition in single crystalline KMo4O6 |
| title_full | Microstructure and metal-insulator transition in single crystalline KMo4O6 |
| title_fullStr | Microstructure and metal-insulator transition in single crystalline KMo4O6 |
| title_full_unstemmed | Microstructure and metal-insulator transition in single crystalline KMo4O6 |
| title_short | Microstructure and metal-insulator transition in single crystalline KMo4O6 |
| title_sort | microstructure and metal insulator transition in single crystalline kmo4o6 |
| topic | KMo4O6 single crystal low-dimensional system |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000600025 |
| work_keys_str_mv | AT margarethandrade microstructureandmetalinsulatortransitioninsinglecrystallinekmo4o6 AT marianalanzonimaffei microstructureandmetalinsulatortransitioninsinglecrystallinekmo4o6 AT leandromarcossalgadoalves microstructureandmetalinsulatortransitioninsinglecrystallinekmo4o6 AT carlosalbertomoreiradossantos microstructureandmetalinsulatortransitioninsinglecrystallinekmo4o6 AT bentoferreira microstructureandmetalinsulatortransitioninsinglecrystallinekmo4o6 AT antoniofernandosartori microstructureandmetalinsulatortransitioninsinglecrystallinekmo4o6 |