Volume 80, Number 3, November 2007
|Number of page(s)||4|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||01 October 2007|
Charge ordering phase submerged in ferromagnetic ordering phase in the Nd0.5Sr0.5MnO3 system
National High Magnetic Field Laboratory, University of Science and Technology of China - Hefei 230026, PRC
2 Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China Hefei 230026, PRC
Corresponding author: email@example.com
Accepted: 4 September 2007
In this letter, Nd0.5Sr0.5MnGaxO3 (0.0 x 0.075) manganites have been investigated. Diffuse satellite spots and streaks can be seen in transmission electron microscopy and the antiferromagnetic signal in electron spin resonance also occur early at 235 K which is much higher than the usually defined of the Nd0.5Sr0.5MnGaxO3 sample, indicating that the charge ordering phase already appears in the ferromagnetic regions ( = 250 K). This charge ordering phase is submerged by the ferromagnetic phase so that it is invisible in routine measurements. As the moves to lower temperature with Ga doping, the charge ordering phase exhibits itself gradually around 240 K.
PACS: 75.47.Lx – Manganites / 74.25.Ha – Magnetic properties / 76.30.-v – Electron paramagnetic resonance and relaxation
© Europhysics Letters Association, 2007
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