Search results

Sort By:

Limit search:

Physical Properties of Magnetite Nanoparticles Covered by 11-Mercaptoundecanoic Acid

100%

Timko M., Kopčanský P., Antalik M., Simsikova M., Valusova E., Molcan M., Kováč J.

Acta Physica Polonica A

2012

vol. 121

issue 5-6

1321-1323

We have investigated the magnetic behavior of magnetite nanoparticles covered by the 11-mercaptoundecanoic acid around magnetite core prepared by a standard co-precipitation method. The particles show superparamagnetic behavior at room temperature, with transition to a blocked state at blocking temperature 91 K estimated from zero field cooled and field cooled at 500 Oe experiment. The hysteresis loop measured at 293 K showed magnetization 32.8 emu/g at 50 kOe without any coercivity. The mean particle size (7.1 nm) was determined by fitting a magnetization curve obtained at 295 K assuming a log-normal size distribution.

Refine search results

1 Acta Physica Polonica A

1 2012

1 Antalik M.

1 Kopčanský P.

1 Kováč J.

1 Molcan M.

1 Simsikova M.

1 Timko M.

1 Valusova E.

Search results

Physical Properties of Magnetite Nanoparticles Covered by 11-Mercaptoundecanoic Acid