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Néel relaxation theory is a theory developed by Louis Néel in 1949 to explain time-dependent magnetic phenomena known as magnetic viscosity. It is also called Néel-Arrhenius theory, after the Arrhenius equation, and Néel-Brown theory after a more rigorous derivation by William Fuller Brown, Jr. Néel used his theory to develop a model of thermoremanent magnetization in single-domain ferromagnetic minerals that explained how these minerals could reliably record the geomagnetic field. He also modeled frequency-dependent susceptibility and alternating field demagnetization.

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  • Tiempo de relajación de Néel (es)
  • Néel relaxation theory (en)
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  • El tiempo de relajación de Néel es una teoría desarrollada por Louis Néel en 1949​ para explicar el fenómeno conocido como viscosidad magnética. También es conocida como la teoría de Néel-Arrhenius, por la ecuación de Arrhenius, y como teoría de Néel-Brown debido al desarrollo teórico realizado por William Fuller Brown, Jr.​ Néel utilizó su teoría para desarrollar un modelo de de los minerales ferromagnéticos que explicaba cómo estos minerales podían guardar la información del campo geomagnético. Con esta teoría además pudo modelizar la dependencia con la frecuencia de la susceptibilidad magnética. (es)
  • Néel relaxation theory is a theory developed by Louis Néel in 1949 to explain time-dependent magnetic phenomena known as magnetic viscosity. It is also called Néel-Arrhenius theory, after the Arrhenius equation, and Néel-Brown theory after a more rigorous derivation by William Fuller Brown, Jr. Néel used his theory to develop a model of thermoremanent magnetization in single-domain ferromagnetic minerals that explained how these minerals could reliably record the geomagnetic field. He also modeled frequency-dependent susceptibility and alternating field demagnetization. (en)
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  • El tiempo de relajación de Néel es una teoría desarrollada por Louis Néel en 1949​ para explicar el fenómeno conocido como viscosidad magnética. También es conocida como la teoría de Néel-Arrhenius, por la ecuación de Arrhenius, y como teoría de Néel-Brown debido al desarrollo teórico realizado por William Fuller Brown, Jr.​ Néel utilizó su teoría para desarrollar un modelo de de los minerales ferromagnéticos que explicaba cómo estos minerales podían guardar la información del campo geomagnético. Con esta teoría además pudo modelizar la dependencia con la frecuencia de la susceptibilidad magnética. (es)
  • Néel relaxation theory is a theory developed by Louis Néel in 1949 to explain time-dependent magnetic phenomena known as magnetic viscosity. It is also called Néel-Arrhenius theory, after the Arrhenius equation, and Néel-Brown theory after a more rigorous derivation by William Fuller Brown, Jr. Néel used his theory to develop a model of thermoremanent magnetization in single-domain ferromagnetic minerals that explained how these minerals could reliably record the geomagnetic field. He also modeled frequency-dependent susceptibility and alternating field demagnetization. (en)
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