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Ferrite nanoparticles or iron oxide nanoparticles (iron oxides in crystal structure of maghemite or magnetite) are the most explored magnetic nanoparticles up to date.Once the ferrite particles become smaller than 128 nm [22] they become superparamagnetic which prevents self agglomeration since they exhibit their magnetic behavior only when an external magnetic field is applied.
Magnetite has been important in understanding the conditions under which rocks form. Magnetite reacts with oxygen to produce hematite, and the mineral pair forms a buffer that can control how oxidizing its environment is (the oxygen fugacity). This buffer is known as the hematite-magnetite or HM buffer.
The translation of the magnetic force exerted on the tumor and its microenvironment by magnetic nanoparticles into biochemical signaling pathways is known as the magneto-mechanochemical effect. This leads to the formation of regions with different biomechanical and biochemical properties within the tumor.
Magnetic droplets, in the context of droplet-based microfluidics, are microliter size droplets that are either composed of ferrofluids or contain some magnetic component that allows for manipulation via an applied magnetic field. Ferrofluids are homogenous mixtures of colloidal solutions of magnetic nanoparticles in a liquid carrier. [80]
Iron(II,III) oxide, or black iron oxide, is the chemical compound with formula Fe 3 O 4.It occurs in nature as the mineral magnetite.It is one of a number of iron oxides, the others being iron(II) oxide (FeO), which is rare, and iron(III) oxide (Fe 2 O 3) which also occurs naturally as the mineral hematite.
A and B can also be the same metal with different valences, as is the case with magnetite, Fe 3 O 4 (as Fe 2+ Fe 3+ 2 O 2− 4), which is the most abundant member of the spinel group. [3] Spinels are grouped in series by the B cation. The group is named for spinel (MgAl 2 O 4), which was once known as "spinel ruby". [4] (Today the term ruby is ...
Formation of Magnetosome chain. [8] These magnetite crystals are contained within an organelle envelope. This envelope is referred to as a magnetosome. Within the organelle there can either ferrimagnetic crystals of magnetite (Fe 3 O 4) or the iron sulfide greigite (Fe 3 S 4). Recently there have been a few other magnetic compounds found but ...
A magnetic anisotropy energy barrier; Long spin relaxation time. Conditions 1 and 2, but not 3, have been demonstrated in a number of nanostructures, such as nanoparticles, [8] nanoislands, [9] and quantum dots [10] [11] with a controlled number of magnetic atoms (between 1 and 10).
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