Correlating melting and collapse of charge ordering with magnetic transitions in La{sub 0.5-x}Pr{sub x}Ca{sub 0.5}MnO{sub 3}

Highlights: • Concept of normalized magnetization is introduced to explain relative magnetic transitions. • Coexistence of two magnetic modes is correlated with the magnetic transitions and MIT. • Field induced melting and collapse of charge ordered antiferromagnetic (CO-AFM) state into ferromagneti...

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Bibliographic Details
Published in:Materials research bulletin 2016-08, Vol.80
Main Authors: Nadeem, M., Iqbal, M. Javid, Farhan, M. Arshad, Ahmed, Ejaz, Khan, M. Nasir
Format: Article
Language:English
Subjects:
ANTIFERROMAGNETISM
ATOMIC FORCE MICROSCOPY
CALCIUM COMPOUNDS
CARBON
CARBON MONOXIDE
CERAMICS
CURIE POINT
DOPED MATERIALS
LANTHANUM COMPOUNDS
MAGNETIC MATERIALS
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MAGNETIZATION
MANGANATES
MATERIALS SCIENCE
MELTING
POLYCRYSTALS
PRASEODYMIUM COMPOUNDS
RELAXATION
TEMPERATURE DEPENDENCE
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Summary:Highlights: • Concept of normalized magnetization is introduced to explain relative magnetic transitions. • Coexistence of two magnetic modes is correlated with the magnetic transitions and MIT. • Field induced melting and collapse of charge ordered antiferromagnetic (CO-AFM) state into ferromagnetic (FM) state is conferred. - Abstract: The magnetic properties of polycrystalline La{sub 0.5-x}Pr{sub x}Ca{sub 0.5}MnO{sub 3} material are investigated at different temperatures. The existence of magnetically diverse phases associated with various relaxation modes and their modulation with temperature and doping is analyzed. La{sub 0.5}Ca{sub 0.5}MnO{sub 3} exhibited field induced melting and collapse of charge ordered antiferromagnetic (CO-AFM) phase into ferromagnetic (FM) state. This phenomenon results in lowering of Neel’s temperature (T{sub N}) along with changes in the slope of magnetic moment with temperature. Using normalized M(T) curves, the variation and interplay of charge ordered temperature (T{sub CO}), Curie temperature (T{sub C}) and T{sub N} is conferred. The coexistence of two magnetic modes is explained as major ingredient for the magnetic transitions as well as metal to insulator transition (MIT); where melting and collapse of charge ordering is conversed as basic feature in these Praseodymium (Pr) doped La{sub 0.5}Ca{sub 0.5}MnO{sub 3} materials.
ISSN:0025-5408
1873-4227
DOI:10.1016/J.MATERRESBULL.2016.03.019