| High Ferromagnetic Transition Temperature in PbS and PbS:Mn Nanowires. | |
| | |
MedLine Citation:
|
PMID: 22141428 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Spontaneous magnetization measured in the temperature range 5-300 K with high ferromagnetic transition temperature (Tc) has been observed in both undoped and Mn doped (2 to 8 mol%) PbS nanowires (diameter 30 nm) in polymer. For undoped sample, we find Tc ~ 290 K while for doped samples Tc varies between 310-340 K depending on Mn concentrations. Both Tc and coercive fields are critically dependent on Mn concentrations. Coercive fields show a T0.5 dependence with temperature for a moderate concentration of Mn (4 mol%) in PbS while it deviates from T0.5 behavior for higher Mn concentrations. Anionic defects arising out of nonstoichiometric growth is solely responsible for the observed magnetism in undoped PbS nanowires. The role of intrinsic strain along with reduced dimensionality in determining such high Tc and overall magnetizations has been discussed. |
| | |
Authors:
|
Swapan K Mandal; Arup Ratan Mandal; Sangam Banerjee |
Related Documents
:
|
18930418 - Measurement of sample temperatures under magic-angle spinning from the chemical shift a... 20706358 - Delayed elastic effects in the glass ceramics zerodur and ule at room temperature. 9199778 - Modeling the electrophoresis of lysozyme. ii. inclusion of ion relaxation. 19905088 - Nonequilibrium thermodynamics of driven amorphous materials. iii. shear-transformation-... 15551578 - Ion loss due to initial recombination in a parallel-plate cavity ionization chamber. 19884038 - Development of responsive lanthanide probes for cellular applications. |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-12-5 |
Journal Detail:
|
Title: ACS applied materials & interfaces Volume: - ISSN: 1944-8252 ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
|
Created Date: 2011-12-6 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101504991 Medline TA: ACS Appl Mater Interfaces Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: The role of deliberate practice in the acquisition of clinical skills.
Next Document: An Obituary for GFR as the Main Marker for Kidney Function?