Double metal-insulator transitions and MR in La(0.67)Ca(0.33)Mn(1-x)Ru(x)O(3) (x</=0.10): A qualitative understanding in light of possible magnetic phase separation
L. Seetha Lakshmi (1), V. Sridharan (1), D. V. Natarajan (1), Rajeev, Rawat (2), Sharat Chandra (1), V. Sankara Sastry (1), T. S. Radhakrishnan, (1). ((1)Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India,, (2)Inter University Consortium for DAE Facilities
TL;DR
This study investigates how Ru doping affects the magnetic and electrical properties of La(0.67)Ca(0.33)MnO(3), revealing double metal-insulator transitions and magnetoresistance phenomena possibly due to magnetic phase separation.
Contribution
It provides a qualitative understanding of the magnetic phase separation and its influence on magnetotransport properties in Ru-doped La(0.67)Ca(0.33)MnO(3) compounds.
Findings
Observation of double metal-insulator transitions.
Enhanced magnetoresistance linked to phase separation.
Magnetotransport properties affected by Ru doping levels.
Abstract
This paper is in continuation of our previous work on the structural, electrical and magnetic properties of Ru doped La(0.67)Ca(0.33)MnO(3) compounds (Ref.: L.Seetha Lakshmi et.al, J. Magn. Magn. Mater. 257, 195 (2003)). Here we report the results of magnetotransport measurements on La(0.67)Ca(0.33)Mn(1-x)Ru(x)O(3) (0<x< 0.1) compounds in the light of proposed magnetic phase separation.
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Taxonomy
TopicsMagnetic and transport properties of perovskites and related materials · Magnetic Properties of Alloys · Rare-earth and actinide compounds