Influence of charge and magnetic ordering on the insulator-metal transition in Pr{sub 1{minus}{ital x}}Ca{sub {ital x}}MnO{sub 3}
Journal Article
·
· Physical Review, B: Condensed Matter
OSTI ID:130719
- Physics Department, University of Warwick, Coventry CV4 7AL (United Kingdom)
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393 (United States)
A detailed study of the properties of Pr{sub 1{minus}{ital x}}Ca{sub {ital x}}MnO{sub 3} shows that for a range of compositions (0.3{le}{ital x}{lt}0.5) there is a first-order magnetic-field-induced insulator-metal transition. For the {ital x}=0.4 composition the magnetic and charge ordering (CO) effects are decoupled with antiferromagnetic (AFM) ordering, {ital T}{sub {ital N}}=170 K, developing at considerably lower temperatures than the CO state, {ital T}{sub CO}=250 K. Below the CO temperature, metamagnetic transitions exist that transform the magnetic correlations from either paramagnetic or AFM to ferromagnetic. Metastable conducting states are formed below 25 K.
- Research Organization:
- Oak Ridge National Laboratory
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 130719
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 20 Vol. 52; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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