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Parameterization of magnetic viscosity and its application in inferring magnetic grains in natural samples
Tamuntuan G.a,b, Bijaksana S.a, Fauzi U.a, Maryunani K.a
a Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung, 40132, Indonesia
b Faculty of Mathematics and Natural Sciences, Sam Ratulangi University, Manado, 95115, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2015 AIP Publishing LLC.Magnetic viscosity, also known as viscous magnetization, is one of the magnetic properties that rarely used in study of rock magnetism. The recent emergence of portable magnetic viscosity meter allows scientists to exploit that magnetic viscosity as the proxy parameters of processes recorded in natural materials. One of such instrument is MVM1, a new kind of magnetic viscosity meter which allow measurement of viscous magnetization to be conducted in 14 steps of time delay ranging from 10 to 100?μs. In this study, we have measured the changes of magnetic viscosity over the time delay and magnetic susceptibility in a suite of natural samples. The results show that viscous magnetization decays with time (in logarithmic scale or log t) which follows the trend of cubical-logarithmic decay. This is a unique response of fine magnetic grains, i.e. superparamagnetic grains, when that magnetization was measured in very short time delay. We then found the correlation between parameters of magnetic viscosity, S in specific range of time delay, and parameters derived from magnetic susceptibility measurements. This correlation enables the measurements of magnetic viscosity to be used in order to approximate fraction of specific size of fine magnetic grains in bulk samples.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Magnetic viscosity,Natural samples[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1063/1.4917158[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]