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Title: Tunnel diode resonator for precision magnetic susceptibility measurements in a mK temperature range and large DC magnetic fields

Abstract

Precision radio-frequency measurements of the magnetic susceptibility using the tunnel diode resonator (TDR) technique are used to study the delicate effects in magnetic and superconducting materials. High resolution (in ppb range) measurements are particularly important for studies of the London and Campbell penetration depths in a superconductor and for the investigation of magnetic transitions in (anti)ferromagnets. Due to the small rf magnetic-excitation in a mOe range, the TDR is especially useful at low-temperatures in a mK range, if Joule heating generated in the TDR circuitry is efficiently removed and the circuit is stabilized with sub-mK precision. Unfortunately, the circuit has significant magnetic field dependence, and therefore, most of the precision TDR measurements at low-temperatures were conducted in zero magnetic field. In this work, we describe the design of a setup for precision TDR measurements in a dilution refrigerator down to ~40 mK with a 14 T superconducting magnet. The key features of our design are the separated electronics components and the placement of the most field sensitive parts in the field-compensated zone far from the center of solenoid as well as the heat-sinking at a higher temperature stage. As a result, the performance of the working setup is demonstrated usingmore » several superconductors.« less

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States); Univ. of Maryland, College Park, MD (United States)
  2. Ames Lab. and Iowa State Univ., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1478992
Alternate Identifier(s):
OSTI ID: 1472213
Report Number(s):
IS-J-9781
Journal ID: ISSN 0034-6748
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 89; Journal Issue: 9; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Kim, Hyunsoo, Tanatar, M. A., and Prozorov, R. Tunnel diode resonator for precision magnetic susceptibility measurements in a mK temperature range and large DC magnetic fields. United States: N. p., 2018. Web. https://doi.org/10.1063/1.5048008.
Kim, Hyunsoo, Tanatar, M. A., & Prozorov, R. Tunnel diode resonator for precision magnetic susceptibility measurements in a mK temperature range and large DC magnetic fields. United States. https://doi.org/10.1063/1.5048008
Kim, Hyunsoo, Tanatar, M. A., and Prozorov, R. Mon . "Tunnel diode resonator for precision magnetic susceptibility measurements in a mK temperature range and large DC magnetic fields". United States. https://doi.org/10.1063/1.5048008. https://www.osti.gov/servlets/purl/1478992.
@article{osti_1478992,
title = {Tunnel diode resonator for precision magnetic susceptibility measurements in a mK temperature range and large DC magnetic fields},
author = {Kim, Hyunsoo and Tanatar, M. A. and Prozorov, R.},
abstractNote = {Precision radio-frequency measurements of the magnetic susceptibility using the tunnel diode resonator (TDR) technique are used to study the delicate effects in magnetic and superconducting materials. High resolution (in ppb range) measurements are particularly important for studies of the London and Campbell penetration depths in a superconductor and for the investigation of magnetic transitions in (anti)ferromagnets. Due to the small rf magnetic-excitation in a mOe range, the TDR is especially useful at low-temperatures in a mK range, if Joule heating generated in the TDR circuitry is efficiently removed and the circuit is stabilized with sub-mK precision. Unfortunately, the circuit has significant magnetic field dependence, and therefore, most of the precision TDR measurements at low-temperatures were conducted in zero magnetic field. In this work, we describe the design of a setup for precision TDR measurements in a dilution refrigerator down to ~40 mK with a 14 T superconducting magnet. The key features of our design are the separated electronics components and the placement of the most field sensitive parts in the field-compensated zone far from the center of solenoid as well as the heat-sinking at a higher temperature stage. As a result, the performance of the working setup is demonstrated using several superconductors.},
doi = {10.1063/1.5048008},
journal = {Review of Scientific Instruments},
number = 9,
volume = 89,
place = {United States},
year = {2018},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

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Cited by: 1 work
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Figures / Tables:

FIG. 1 FIG. 1: Schematic of a tunnel diode resonator apparatus implemented on an Oxford Instrument dilution refrigerator, model Kelvinox MX400. Left: distribution of various temperature stages. Whereas the orange boxes are good thermal conductors, the white and gray parts represent insulating and weak thermal links, respectively. Right: electrical components on eachmore » thermal stage. The dotted lines indicate weak thermal links.« less

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    Works referencing / citing this record:

    Dielectric resonator method for determining gap symmetry of superconductors through anisotropic nonlinear Meissner effect
    journal, April 2019

    • Bae, Seokjin; Tan, Yuewen; Zhuravel, Alexander P.
    • Review of Scientific Instruments, Vol. 90, Issue 4
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