Superparamagnetism
Superparamagnetism is a form of magnetism, which appears in small ferromagnetic or ferrimagnetic nanoparticles. In sufficiently small nanoparticles, magnetization can randomly flip direction under the influence of temperature. The typical time between two flips is called the Néel relaxation time. In the absence of an external magnetic field, when the time used to measure the magnetization of the nanoparticles is much longer than the Néel relaxation time, their magnetization appears to be in average zero: they are said to be in the superparamagnetic state. In this state, an external magnetic field is able to magnetize the nanoparticles, similarly to a paramagnet. However, their magnetic susceptibility is much larger than that of paramagnets.
primaryTopic
Superparamagnetism
Superparamagnetism is a form of magnetism, which appears in small ferromagnetic or ferrimagnetic nanoparticles. In sufficiently small nanoparticles, magnetization can randomly flip direction under the influence of temperature. The typical time between two flips is called the Néel relaxation time. In the absence of an external magnetic field, when the time used to measure the magnetization of the nanoparticles is much longer than the Néel relaxation time, their magnetization appears to be in average zero: they are said to be in the superparamagnetic state. In this state, an external magnetic field is able to magnetize the nanoparticles, similarly to a paramagnet. However, their magnetic susceptibility is much larger than that of paramagnets.
has abstract
El superparamagnetismo es un c ...... ada que en los paramagnéticos.
@es
Il superparamagnetismo è una f ...... a dei materiali paramagnetici.
@it
Le superparamagnétisme est un ...... des matériaux paramagnétiques.
@fr
Particulas superparamagnéticas ...... as biológicos e geológicos[2].
@pt
Superparamagnetism is a form o ...... rger than that of paramagnets.
@en
Superparamagnetismus, auch sup ...... Magnetfeld abgeschaltet wurde.
@de
Superparamagnetyzm – zjawisko ...... hodzące od całych krystalitów.
@pl
Суперпарамагнетизм — форма маг ...... го больше, чем парамагнетиков.
@ru
超常磁性(ちょうじょうじせい)は強磁性体やフェリ磁性体のナノ ...... 体と似ているが、その磁気感受率は常磁性体よりもずっと大きい。
@ja
超顺磁性是指當某些具有磁性的顆粒小於某個尺寸時,外場產生的磁 ...... 為12.5奈米,而在4.2K時半徑為2.2奈米還是鐵磁性的。
@zh
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comment
El superparamagnetismo es un c ...... dirección del campo aplicado.
@es
Il superparamagnetismo è una f ...... zazione delle nanoparticelle è
@it
Le superparamagnétisme est un ...... de grains superparamagnétique
@fr
Particulas superparamagnéticas ...... as biológicos e geológicos[2].
@pt
Superparamagnetism is a form o ...... rger than that of paramagnets.
@en
Superparamagnetismus, auch sup ...... Magnetfeld abgeschaltet wurde.
@de
Superparamagnetyzm – zjawisko ...... agnesowania całego krystalitu.
@pl
Суперпарамагнетизм — форма маг ...... го больше, чем парамагнетиков.
@ru
超常磁性(ちょうじょうじせい)は強磁性体やフェリ磁性体のナノ ...... 体と似ているが、その磁気感受率は常磁性体よりもずっと大きい。
@ja
超顺磁性是指當某些具有磁性的顆粒小於某個尺寸時,外場產生的磁 ...... 為12.5奈米,而在4.2K時半徑為2.2奈米還是鐵磁性的。
@zh
label
Superparamagnetism
@en
Superparamagnetismo
@es
Superparamagnetismo
@it
Superparamagnetismo
@pt
Superparamagnetismus
@de
Superparamagnetyzm
@pl
Superparamagnétisme
@fr
Суперпарамагнетизм
@ru
超常磁性
@ja
超顺磁性
@zh