A High Pressure Anvil Used for ac Magnetic Susceptibility Measurement at Low Temperature

1970 ◽  
Vol 9 (4) ◽  
pp. 425-426
Author(s):  
Tetsuo Nakajima ◽  
Eizo Kanda
Keyword(s):  
High Pressure ◽  
Magnetic Susceptibility ◽  
Low Temperature ◽  
Magnetic Susceptibility Measurement ◽  
Ac Magnetic Susceptibility

Ba1−xKxBiO3 Superconducting Crystals with New Solubility Limit

1992 ◽  
Vol 275 ◽  
Author(s):  
H. Y. Tang ◽  
W. L. Chen ◽  
W. J. Wen ◽  
M. K. Wu ◽  
M. L. Norton
Keyword(s):  
Magnetic Susceptibility ◽  
Low Temperature ◽  
Potassium Hydroxide ◽  
Solubility Limit ◽  
Ac Magnetic Susceptibility ◽  
Molten Flux

ABSTRACTCrystalline bismuthates Ba1−xKxBiO3 with x greater than 0.5 are obtained by a low temperature anodic electrocrystallization method in a potassium hydroxide molten flux. The x = 0.56 bismuthate crystal shows 8K superconductivity determined by AC magnetic susceptibility.

AC Magnetic Susceptibility Measurement and Irreversibility Line in (Bi,Pb)2Sr2Ca2Cu3Oy

1992 ◽  
pp. 377-380
Author(s):  
Masaya Watahiki ◽  
Ryozo Yoshizaki ◽  
Hiroshi Ikeda ◽  
Kozo Yoshikawa ◽  
Nobuyoshi Tomita
Keyword(s):  
Magnetic Susceptibility ◽  
Irreversibility Line ◽  
Magnetic Susceptibility Measurement ◽  
Ac Magnetic Susceptibility

scholarly journals Incompatibility of Published ac Magnetic Susceptibility of a Room Temperature Superconductor with Measured Raw Data

2021 ◽  
Author(s):  
J. E. Hirsch
Keyword(s):  
High Pressure ◽  
Magnetic Susceptibility ◽  
Room Temperature ◽  
Superconducting Transition ◽  
Ac Magnetic Susceptibility ◽  
Raw Data ◽  
Magnetic Susceptibility Data ◽  
Susceptibility Data ◽  
Room Temperature Superconductivity

Room temperature superconductivity has recently been reported for a carbonaceous sulfur hydride (CSH) under high pressure by Snider et al [1]. The paper reports sharp drops in magnetic susceptibility as a function of temperature for five different pressures, that are interpreted as signaling a superconducting transition. Here I question the validity and faithfulness of the magnetic susceptibility data presented in the paper by comparison with the measured raw data reported by two of the authors of ref. [2]. This invalidates the assertion of the paper [1] that the susceptibility measurements support the case for superconductivity in this compound.

The Studies of Ac Magnetic Susceptibility and Higher Harmonics in Cd0.88Cr1.96V0.31Se4 Semiconductor

2012 ◽  
Vol 194 ◽  
pp. 153-157 ◽  
Author(s):  
Tadeusz Groń ◽  
Ewa Malicka ◽  
Andrzej W. Pacyna ◽  
Beata Zawisza
Keyword(s):  
Magnetic Susceptibility ◽  
Low Temperature ◽  
Imaginary Part ◽  
Magnetic Order ◽  
Magnetic State ◽  
Zero Field ◽  
Ac Magnetic Susceptibility ◽  
Higher Harmonics ◽  
Temperature Dependences ◽  
Dynamic Magnetic Susceptibility

The complex ac dynamic magnetic susceptibility was used to study the magnetic state in the polycrystalline Cd0.88Cr1.96V0.31Se4 spinel. The temperature dependences of the zero field in-phase (real part) and out-of-phase (imaginary part) components of fundamental susceptibility showed the mictomagnetic behavior at low temperature and a weak Hopkinson-like effect close to the ordering temperature. These effects are also evidenced by the non-vanishing both the real and imaginary components of the 2nd and 3rd harmonics in the region of magnetic order.

scholarly journals Incompatibility of Published ac Magnetic Susceptibility of a Room Temperature Superconductor with Measured Raw Data

2021 ◽  
Author(s):  
Jorge Hirsch
Keyword(s):  
High Pressure ◽  
Magnetic Susceptibility ◽  
Room Temperature ◽  
Superconducting Transition ◽  
Ac Magnetic Susceptibility ◽  
Raw Data ◽  
Magnetic Susceptibility Data ◽  
Susceptibility Data ◽  
Room Temperature Superconductivity

Room temperature superconductivity has recently been reported for a carbonaceous sulfur hydride (CSH) under high pressure by Snider et al [1]. The paper reports sharp drops in magnetic susceptibility as a function of temperature for five different pressures, that are interpreted as signaling a superconducting transition. Here I question the validity and faithfulness of the magnetic susceptibility data presented in the paper by comparison with the measured raw data reported by two of the authors of ref. [2]. This casts doubt on the assertion of the paper [1] that the susceptibility measurements support the case for superconductivity in this compound.

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