Anomalous Magnetotransport Properties of Bi Doped La0.67Sr0.33MnO3

Anomalous Magnetotransport Properties of Bi Doped La0.67Sr0.33MnO3 IntroductionThe colossal magnetoresistance (CMR) manganites, RE1−xAxMnO3 (RE = rare earth, A = Ca, Sr, Ba,…) exhibit remarkable properties, such as antiferromagnetic insulators, charge ordering states, ferromagnetic insulators, ferromagnetic metallic states depending on doping concentrations of the divalent ions. These materials are fascinating due to the rich physics for understanding the interplay of charge, spin, and lattice degrees of freedom. CMR manganites exhibit the metal‐to‐insulator (MI) transitions or insulating behaviour due to the doping concentration of the holes or electrons. Several reports state that the phase separation is one of the key factors to achieve the large magnetoresistance in CMR manganites. The phase separation dominates when the ions of different nature doped into the manganites. For example, La0.67Sr0.33MnO3 is one of the ferromagnetic metallic manganites, while Bi0.67Sr0.33MnO3 is a charge ordered insulating manganite. When Bi is doped in La0.67Sr0.33MnO3, there is a competition of ferromagnetic metallic and charge ordering insulating phases occur. We have reported step wise magnetization behaviour for nominal Bi doping in La0.67Sr0.33MnO3 and the phase separation of the ferromagnetic metallic and antiferromagnetic charge ordering states for higher doping. The La0.37Bi0.3Sr0.33MnO3 has shown the phase competition of the ferromagnetic metallic and antiferromagnetic charge ordered states. Upon observing the phase transitions, coexisting phases http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physica Status Solidi (B) Basic Solid State Physics Wiley

Anomalous Magnetotransport Properties of Bi Doped La0.67Sr0.33MnO3

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Publisher
Wiley Subscription Services, Inc., A Wiley Company
Copyright
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
0370-1972
eISSN
1521-3951
D.O.I.
10.1002/pssb.201700194
Publisher site
See Article on Publisher Site

Abstract

IntroductionThe colossal magnetoresistance (CMR) manganites, RE1−xAxMnO3 (RE = rare earth, A = Ca, Sr, Ba,…) exhibit remarkable properties, such as antiferromagnetic insulators, charge ordering states, ferromagnetic insulators, ferromagnetic metallic states depending on doping concentrations of the divalent ions. These materials are fascinating due to the rich physics for understanding the interplay of charge, spin, and lattice degrees of freedom. CMR manganites exhibit the metal‐to‐insulator (MI) transitions or insulating behaviour due to the doping concentration of the holes or electrons. Several reports state that the phase separation is one of the key factors to achieve the large magnetoresistance in CMR manganites. The phase separation dominates when the ions of different nature doped into the manganites. For example, La0.67Sr0.33MnO3 is one of the ferromagnetic metallic manganites, while Bi0.67Sr0.33MnO3 is a charge ordered insulating manganite. When Bi is doped in La0.67Sr0.33MnO3, there is a competition of ferromagnetic metallic and charge ordering insulating phases occur. We have reported step wise magnetization behaviour for nominal Bi doping in La0.67Sr0.33MnO3 and the phase separation of the ferromagnetic metallic and antiferromagnetic charge ordering states for higher doping. The La0.37Bi0.3Sr0.33MnO3 has shown the phase competition of the ferromagnetic metallic and antiferromagnetic charge ordered states. Upon observing the phase transitions, coexisting phases

Journal

Physica Status Solidi (B) Basic Solid State PhysicsWiley

Published: Jan 1, 2018

Keywords: ; ; ;

References

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