Improved techniques for measurement of superconductivity in diamond anvil cells by magnetic susceptibility

YA Timofeev; VV Struzhkin; RJ Hemley; HK Mao; EA Gregoryanz

doi:10.1063/1.1431257

Improved techniques for measurement of superconductivity in diamond anvil cells by magnetic susceptibility

YA Timofeev^*, VV Struzhkin, RJ Hemley, HK Mao, EA Gregoryanz

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

Recent improvements in magnetic inductive measurements of superconductivity over a broad range of pressures in high-pressure diamond anvils cells are described. A significant increase in sensitivity is obtained by the application of resonant circuits with voltage increasing transformers, allowing an increase in the working frequency of the experimental setup. As a result, superconductivity in samples with linear dimensions as small as 10 mum can be detected. Recent results obtained with this resonant circuit on samples of sulfur at 230 GPa are presented. Further increase in the sensitivity of the experimental setup can be obtained by summing the results of repeated measurements obtained in the same temperature interval. An example is provided by measurements on a small sample of lead. (C) 2002 American Institute of Physics.

Original language	English
Pages (from-to)	371-377
Number of pages	7
Journal	Review of Scientific Instruments
Volume	73
Issue number	2
DOIs	https://doi.org/10.1063/1.1431257
Publication status	Published - Feb 2002

Keywords / Materials (for Non-textual outputs)

HIGH-PRESSURES
METALLIC HYDROGEN
HOHEM DRUCK
T-C
GPA
TEMPERATURES
TRANSITIONS
BARIUM
SULFUR
PHASE

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title = "Improved techniques for measurement of superconductivity in diamond anvil cells by magnetic susceptibility",

abstract = "Recent improvements in magnetic inductive measurements of superconductivity over a broad range of pressures in high-pressure diamond anvils cells are described. A significant increase in sensitivity is obtained by the application of resonant circuits with voltage increasing transformers, allowing an increase in the working frequency of the experimental setup. As a result, superconductivity in samples with linear dimensions as small as 10 mum can be detected. Recent results obtained with this resonant circuit on samples of sulfur at 230 GPa are presented. Further increase in the sensitivity of the experimental setup can be obtained by summing the results of repeated measurements obtained in the same temperature interval. An example is provided by measurements on a small sample of lead. (C) 2002 American Institute of Physics.",

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author = "YA Timofeev and VV Struzhkin and RJ Hemley and HK Mao and EA Gregoryanz",

year = "2002",

month = feb,

doi = "10.1063/1.1431257",

language = "English",

volume = "73",

pages = "371--377",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics",

number = "2",

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TY - JOUR

T1 - Improved techniques for measurement of superconductivity in diamond anvil cells by magnetic susceptibility

AU - Timofeev, YA

AU - Struzhkin, VV

AU - Hemley, RJ

AU - Mao, HK

AU - Gregoryanz, EA

PY - 2002/2

Y1 - 2002/2

N2 - Recent improvements in magnetic inductive measurements of superconductivity over a broad range of pressures in high-pressure diamond anvils cells are described. A significant increase in sensitivity is obtained by the application of resonant circuits with voltage increasing transformers, allowing an increase in the working frequency of the experimental setup. As a result, superconductivity in samples with linear dimensions as small as 10 mum can be detected. Recent results obtained with this resonant circuit on samples of sulfur at 230 GPa are presented. Further increase in the sensitivity of the experimental setup can be obtained by summing the results of repeated measurements obtained in the same temperature interval. An example is provided by measurements on a small sample of lead. (C) 2002 American Institute of Physics.

AB - Recent improvements in magnetic inductive measurements of superconductivity over a broad range of pressures in high-pressure diamond anvils cells are described. A significant increase in sensitivity is obtained by the application of resonant circuits with voltage increasing transformers, allowing an increase in the working frequency of the experimental setup. As a result, superconductivity in samples with linear dimensions as small as 10 mum can be detected. Recent results obtained with this resonant circuit on samples of sulfur at 230 GPa are presented. Further increase in the sensitivity of the experimental setup can be obtained by summing the results of repeated measurements obtained in the same temperature interval. An example is provided by measurements on a small sample of lead. (C) 2002 American Institute of Physics.

KW - HIGH-PRESSURES

KW - METALLIC HYDROGEN

KW - HOHEM DRUCK

KW - T-C

KW - GPA

KW - TEMPERATURES

KW - TRANSITIONS

KW - BARIUM

KW - SULFUR

KW - PHASE

U2 - 10.1063/1.1431257

DO - 10.1063/1.1431257

M3 - Article

SN - 0034-6748

VL - 73

SP - 371

EP - 377

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 2

ER -

Improved techniques for measurement of superconductivity in diamond anvil cells by magnetic susceptibility

Abstract / Description of output

Keywords / Materials (for Non-textual outputs)

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