Effect of size reduction on magnetic ordering in Bi{sub 0.2}Sr{sub 0.8}MnO{sub 3}

Journal Article · Wed May 07 04:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4865885· OSTI ID:22273963

Singh, Geetanjali

We present a comparative study of the temperature dependent magnetic properties and electron paramagnetic resonance parameters of nano and bulk samples of Bi{sub 0.2}Sr{sub 0.8}MnO{sub 3} (BSMO). Bulk BSMO is known to have a high T{sub N} ∼ 260 K and robust charge ordering (T{sub CO} ∼ 360 K). We confirm that the bulk sample shows an antiferromagnetic transition around ∼260 K and a spin-glass transition ∼40 K. For the nano sample, we see a clear ferromagnetic transition at around ∼120 K. We conclude that spin glass state, which is present due to the co-existence of antiferromagnetic and ferromagnetic states in the bulk sample, is suppressed in the nano sample and ferromagnetism is induced instead.

• OSTI ID: 22273963
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 17 Vol. 115; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
ANTIFERROMAGNETISM
BISMUTH COMPOUNDS
ELECTRON SPIN RESONANCE
FERROMAGNETISM
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MAGNETIZATION
MANGANATES
NANOSTRUCTURES
SPIN GLASS STATE
STRONTIUM COMPOUNDS
TEMPERATURE DEPENDENCE