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Imprinting magnetic information in manganites with x rays
M Garganourakis1, V Scagnoli, S W Huang
1Swiss Light Source, Paul Scherrer Institut, CH 5232 Villigen PSI, Switzerland.
Physical Review Letters
|October 30, 2012
Summary
Exposure to x-rays enhances the antiferromagnetic response and conductivity of Pr0.5Ca0.5MnO3 films. This persistent x-ray induced doping offers a new method for writing electronic and magnetic information, demonstrating novel magnetism manipulation.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Magnetism
Background:
- Epitaxial films of Pr0.5Ca0.5MnO3 exhibit orbital and charge ordering.
- Understanding the influence of external stimuli on these ordered states is crucial for advanced materials applications.
Purpose of the Study:
- To investigate the effects of X-ray irradiation on the magnetic and electronic properties of Pr0.5Ca0.5MnO3 films.
- To explore the potential of X-ray induced phenomena for information storage and magnetism manipulation.
Main Methods:
- X-ray exposure of an orbital and charge ordered epitaxial film of Pr0.5Ca0.5MnO3.
- Measurement of antiferromagnetic response and electrical conductivity before and after X-ray exposure.
Main Results:
- X-ray irradiation leads to an increase in the antiferromagnetic response of the film.
- Concomitantly, the electrical conductivity of the film improves following X-ray exposure.
- These changes are attributed to persistent X-ray induced doping, altering the magnetic structure.
Conclusions:
- X-ray irradiation can persistently dope Pr0.5Ca0.5MnO3 films, modifying their magnetic and electronic properties.
- This phenomenon provides a novel pathway for writing electronic and magnetic information.
- The study demonstrates a new method for manipulating magnetism in advanced materials.
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