This is a measurement of moment vs. T of OREX-800107-104 pressed pellet. This is the same sample that was used for specific heat capacity (cp vs. T) and determination of linear thermal expansion coefficient (alpha vs. T).  Gel capsule was punctured to allow He gas in/out during measurement.

20250306_TDM_BC_OREX-800107-104_1_TDMRawTabular_361.csv

20250306_TDM_BC_OREX-800107-104_1_TDMRawTabular_361.yaml

20250306_TDM_BC_OREX-800107-104_1_methodDescription_1.docx

20250306_TDM_BC_OREX-800107-104_1_methodDescription_1.yml

20250306_TDM_BC_OREX-800107-104_1_methodDescription_2.pdf

20250306_TDM_BC_OREX-800107-104_1_methodDescription_2.yaml

20250306_TDM_BC_OREX-800107-104_1_report_3068.pdf

20250306_TDM_BC_OREX-800107-104_1_report_3068.yaml

This material is supported by NASA under contract NNM10AA11C issued through the New Frontiers program.

Temperature-Dependent Magnetization

(BC)Quantum Design Physical Property Measurement System (QD-PPMS)

Boston College

Time record of measurements in the experiment.

Temperature of the sample in Kelvin. This temperature records the sample chamber Cernox thermometer of the QD-MPMS cryostat, which has an accuracy of 1%, to first order.  

Measurement of the magnetic field applied to the sample by the superconducting magnet.  This is known as the excitation field, which aligns the spins in the sample and makes possible the measurement of the sample moment.  The decision to use H = 100 Oe or 0.01 T is set as an experimental parameter.  H (applied magnetic field) should be small enough to induce spin alignment, but not too high to induce permanent spin alignment.  The applied magnetic field (Oe) is proportional to the sample moment (emu) response.

Helium pressure in the cryostat used as an exchange gas to thermalize the sample during measurement. Pressure varies slightly over the course of the experiment due to temperature changes in the cryostat.

Helium pressure in the cryostat used as an exchange gas to thermalize the sample during measurement. This is a calculated quantity in SI units since 1 Torr = 133.332 Pa. Pressure varies slightly over the course of the experiment due to temperature changes in the cryostat.

Measured DC moment of sample with an applied H = 0.01 T.

Error for measured DC moment of sample with an applied H = 0.01 T.

Calculation internal to QD=MPMS of the best match to raw data for each measurement.

Time taken for a particular measurement. Time varies with type of measurement and applied field.

Number of measurement points taken by QD-MPMS for a particular measurement application.

Temperature of the sample in Kelvin for the sample cooled in zero field.

Measured DC moment of sample with an applied H = 0.01 T for the sample cooled in zero field.

Error of the measured DC moment of sample with an applied H = 0.01 T for the sample cooled in zero field.

Calculated magnetization in cgs units of sample with an applied H = 0.01 T for the sample cooled in zero field.  

Calculated magnetization error in cgs units of sample with an applied H = 0.01 T for the sample cooled in zero field.

Calculated derivative of the magnetization in cgs units with respect to temperature of sample with an applied H = 0.01 T for the sample cooled in zero field.

Calculated magnetization in SI units of sample with an applied H = 0.01 T for the sample cooled in zero field.

Calculated derivative of the magnetization in SI units with respect to temperature of the sample with an applied H = 0.01 T for the sample cooled in zero field.

Measurement of the magnetic field applied to the sample by the superconducting magnet.

Helium pressure in the cryostat used as an exchange gas to thermalize the sample during measurement.

Measured DC moment of sample with an applied H = 0.01 T for the sample cooled in field.

Error of the measured DC moment of sample with an applied H = 0.01 T for the sample cooled in field.

Calculated magnetization in cgs units of sample with an applied H = 0.01 T for the sample cooled in field.

Calculated magnetization error in cgs units of sample with an applied H = 0.01 T for the sample cooled in field.

Calculated derivative of the magnetization in cgs units with respect to temperature of the sample with an applied H = 0.01 T for the sample cooled in field.

Calculated magnetization in SI units of sample with an applied H = 0.01 T for the sample cooled in field.

Calculated magnetization error in SI units of sample with an applied H = 0.01 T for the sample cooled in zero field.

Calculated derivative of the magnetization in SI units with respect to temperature of sample with an applied H = 0.01 T for the sample cooled in zero field.

Temperature of the sample in Kelvin for the sample cooled in field

Measured DC moment of sample at a fixed temperature as the applied field varies from H = 0 to 3 T of the sample cooled in field.

Error of the measured DC moment of sample at a fixed temperature as the applied field varies from H = 0 to 3 T of the sample cooled in field.

Calculated magnetization in cgs units of sample at a fixed temperature as the applied field varies from H = 0 to 3 T of the sample cooled in field.

Error of the calculated magnetization in cgs units of sample at a fixed temperature as the applied field varies from H = 0 to 3 T of the sample cooled in field.

Calculated magnetization in SI units of sample at a fixed temperature as the applied field varies from H = 0 to 3 T of the sample cooled in field.

Calculated magnetization error in SI units of sample at a fixed temperature as the applied field varies from H = 0 to 3 T of the sample cooled in field.

This is a measurement of moment vs. T of OREX-800107-104 pressed pellet.

Analysis details for 20250306_TDM_BC_OREX-800107-104_1, including sample data and tabular header information.

Description and photos of sample prep for OREX-800107-104

Analysis figures and images for 20250306_TDM_BC_OREX-800107-104_1, including various measurement tables and Bennu  sample images.

Astromat

QD-PPMS Linear Thermal Expansion Coefficent alpha vs. T measurement of slab sample OREX-800107-104

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