Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 7-Day Trial for You or Your Team.

Learn More →

Electric, magnetic, and calorimetric properties and phase diagram of Pr 1 - x Ca x CoO 3 ( 0 <~ x <~ 0 . 5 5 )

Electric, magnetic, and calorimetric properties and phase diagram of Pr 1 - x Ca x CoO 3 ( 0 <~ x... Resistivity, dc magnetization, ac susceptibility, and heat-capacity measurements were carried out for polycrystalline Pr 1 - x Ca x CoO 3 ( 0 <~ x <~ 0 . 5 5 ) . Insulating, metallic, and metal-insulator transition (MIT) regions appear successively with increasing x . The boundary compositions of neighboring regions are between x = 0.1 and 0.2 and between x = 0.45 and 0.5. In the insulating region, the sample is an insulator and shows no phase transition in the range of 2–300 K. In the metallic region, the sample is a metal and shows a ferromagnetic ordering below about 80 K. In the MIT region, the sample shows a metal-insulator transition above about 80 K and a ferromagnetic ordering at around 5 K. The electronic and spin states of each phase are discussed based on the experimental results. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Electric, magnetic, and calorimetric properties and phase diagram of Pr 1 - x Ca x CoO 3 ( 0 <~ x <~ 0 . 5 5 )

Download PDF
7 pages

Loading next page...
 
/lp/american-physical-society-aps/electric-magnetic-and-calorimetric-properties-and-phase-diagram-of-pr-XxthDgKS67

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
American Physical Society (APS)
Copyright
Copyright © 2004 The American Physical Society
ISSN
1550-235X
DOI
10.1103/PhysRevB.69.144406
Publisher site
See Article on Publisher Site

Abstract

Resistivity, dc magnetization, ac susceptibility, and heat-capacity measurements were carried out for polycrystalline Pr 1 - x Ca x CoO 3 ( 0 <~ x <~ 0 . 5 5 ) . Insulating, metallic, and metal-insulator transition (MIT) regions appear successively with increasing x . The boundary compositions of neighboring regions are between x = 0.1 and 0.2 and between x = 0.45 and 0.5. In the insulating region, the sample is an insulator and shows no phase transition in the range of 2–300 K. In the metallic region, the sample is a metal and shows a ferromagnetic ordering below about 80 K. In the MIT region, the sample shows a metal-insulator transition above about 80 K and a ferromagnetic ordering at around 5 K. The electronic and spin states of each phase are discussed based on the experimental results.

Journal

Physical Review B – American Physical Society (APS)

Published: Apr 1, 2004

There are no references for this article.