Understanding the Mass Density of Superconductor YBaCuO

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Discussion Overview

The discussion centers on the mass density of the superconductor YBaCuO, exploring both theoretical calculations and reported measurements. Participants express interest in the basic property of mass/volume, alongside the complexities associated with different compounds within the YBaCuO family.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant expresses frustration at the lack of readily available information on the mass density of YBaCuO, noting that most sources focus on critical temperature and coefficients.
  • Another participant suggests that the mass density can be calculated easily from the unit cell, implying a straightforward approach to obtaining the value.
  • A participant acknowledges their initial stubbornness in searching for the value online and ultimately concludes that calculating it would have been more effective.
  • It is noted that "YBaCuO" refers to a generic name for a family of compounds, raising the question of whether the discussion pertains to the 123 or 124 compound, which affects the number of CuO layers per unit cell.
  • A participant provides a reference to a paper reporting a mass density range of 5.38-5.43 g/cm3, derived from measurements related to the mass attenuation coefficient of X-rays.
  • The same participant recommends completing the theoretical calculation of density to obtain a more definitive value.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the mass density value, with some suggesting calculations while others reference empirical measurements. The discussion remains unresolved regarding the specific compound and its implications for density calculations.

Contextual Notes

Participants highlight the complexity of defining the unit cell for YBaCuO and the variations in density based on different compounds within the family. There is an acknowledgment of the need for clarity on which specific compound is being discussed.

Gonzolo
Hi, I'm looking the mass density of superconductor YBaCuO. Everywhere I look tells me it's critical temperature and all other relevant coefficient values, but no one bothers to mention the basic property of mass/volume. I hope someone can help. Thanks.
 
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You can calculate this quantity very easily form the unit cell.
 
Yup, I suppose I was being stuborn. I expected to find the value on the web or books in 2 minutes, didn't, and couldn't bring myself to give up. Finally did, but I should have just calculated.
 
Gonzolo said:
Yup, I suppose I was being stuborn. I expected to find the value on the web or books in 2 minutes, didn't, and couldn't bring myself to give up. Finally did, but I should have just calculated.

Keep in mind that "YBaCuO" is a very generic name for this family. Do you mean the 123 compound, or the 124 compound, etc...? This can determine the number of CuO layers per unit cell. Also note that the "unit cell" for YBCO (and other high-Tc ceramics) isn't that trivial.

Zz.
 
Got that covered Zz, thanks.
 
This paper has some density of YBaCuO reported - 5.38-5.43 g/cm3. The authors were measuring the mass attenuation coefficient of X-rays.

http://www.iop.org/EJ/abstract/0953-2048/18/1/016

Measurement of mass attenuation coefficients for YBaCuO superconductor at different energies
U Çevik1, H Baltas2, S Çelik2, I Karaca3 and I Kopya1
1 Karadeniz Technical University, Faculty of Arts and Sciences, Department of Physics, 61080 Trabzon, Turkey
2 Karadeniz Technical University, Rize Faculty of Arts and Sciences, Department of Physics, 53100 Rize, Turkey
3 Nigde University, Faculty of Arts and Sciences, Department of Physics, 51200 Nigde, Turkey

To access it, one needs to register and set up a 'free' account. Otherwise one only accesses the abstract which does not provide the details.

I would recommend completing the calculation of density which would be the theoretical value.
 
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