| dc.description.abstract | Phase transition yesng happens to the material magnetite (Fe3O4) is an
interesting phenomenon to study because it has many important
applications, one of which is RAM (Radar Absorbing Material). The
magnetic properties of nanomaterials are known to be influenced by their
size. In this simulation research, the research objective was to analyze the
temperature value of the Curie and the hysteresis curve of the Fe3O4
material with variations in the size of the material sample cube of 5 nm, 8
nm, 10 nm, 12 nm, and 15 nm. In this study, using a micromagnetic
simulation method based on atomistic models with the Vampire program.
The results showed that the Curie temperature value in the Fe3O4 material
was influenced by variations in the size of the material. The Curie
temperature values when the side sizes of the cube are 5 nm, 8 nm, 10 nm,
12 nm, and 15 nm, namely 650 K, 635 K, 650 K, 665 K and 645 K. The
characteristics of the hysteresis curve for Fe3O4 material based on
simulations at each material size (5 nm, 8 nm, 10 nm, 12 nm, and 15 nm)
for several temperatures (0 K, 328 K, 473 K and 773 K) indicate that there
is a change in the coercivity and field values. saturation. | en_US |
