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Jonas Okkels Birk

As seen in: Physical Review B
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Articles

Nanocriticality in the magnetic phase transition of CoO nanoparticles

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By Machteld E. Kamminga, Jonas Okkels Birk, Jari í Hjøllum, Paul Scherrer Institut
| Physical Review B
The universal theory of critical phase transitions describes the critical behavior at second-order phase transitions in infinitely large systems. With the increased contemporary interest in nanoscale materials, we investigated CoO nanoparticles by means of neutron scattering and found how the theory of critical phenomena breaks down in the nanoscale regime.
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