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Section 12-363 entries

12-36.1thermodynamic critical magnetic flux density 12-36.2lower critical magnetic flux density 12-36.3upper critical magnetic flux density

12-36.1

thermodynamic critical magnetic flux density

URNurn:iso:std:iso:80000:-12:ed-2:en:item:12-36.1

Download RDF.jsonld .ttl

https://metanorma.github.io/isq-smart/quantities/part-12/t12-36.1
urn:iso:std:iso:80000:-12:ed-2:en:item:12-36.1

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-12:ed-2:en:item:12-36.1

IEC

urn:iec:std:iec:80000-12:2019:::item:12-36.1

Designations

ENthermodynamic critical magnetic flux density

FRinduction magnétique critique thermodynamique

Symbol

B_{c}

Notation systems

Rendered

B_{c}

AsciiMath

B_"c"

LaTeX

B_{\text{c}}

Definition

quantity given by:

B_{c} = \sqrt{\frac{2 μ_{0} (G_{n} - G_{s})}{V}}

where $G_{n}$ and $G_{s}$ are the Gibbs energies (ISO 80000-5: Thermodynamics) at zero magnetic flux density (IEC 80000-6: Electromagnetism) in a normal conductor and superconductor, respectively, $μ_{0}$ is the magnetic constant (IEC 80000-6: Electromagnetism), and $V$ is volume (ISO 80000-3: Space and time)

grandeur donnée par :

B_{c} = \sqrt{\frac{2 μ_{0} (G_{n} - G_{s})}{V}}

où $G_{n}$ et $G_{s}$ sont respectivement les enthalpies libres (ISO 80000-5: Thermodynamics) d'un conducteur normal et d'un supraconducteur quand l'induction magnétique (IEC 80000-6: Electromagnetism) est nulle, $μ_{0}$ est la constante magnétique (IEC 80000-6: Electromagnetism) et $V$ est le volume (ISO 80000-3: Space and time)

Units

T

tesla

View related quantities →

k g \cdot s^{- 2} \cdot A^{- 1}

kilogram per second squared ampere

View related quantities →

Notes

In type I superconductors, $B_{c}$ is the critical magnetic flux density for disappearance of superconductivity. The symbol $B_{c3}$ is used for the critical magnetic flux density for disappearance of surface superconductivity.

Dans les supraconducteurs de type I, $B_{c}$ est l'induction magnétique critique de disparition de la supraconductivité. Le symbole $B_{c3}$ est utilisé pour l'induction magnétique critique de disparition de la supraconductivité de surface.

Concept HierarchyPendrill (2024)

M T⁻² I⁻¹M T⁻² I⁻¹ quantitiesLevel 0 · Kind

Broader concepts

◇ M T⁻² I⁻¹ quantities

Characterizes

● conductor

Ontology
isq:Quantity smart:TermEntry

Class Hierarchy

smart:Entity smart:TermEntryisq:Quantity

A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.

Instance IRI

isq:t12-36.1

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	12-36.1
skosxl:prefLabel	"thermodynamic critical magnetic flux density"@en
skosxl:altLabel	"B_"c""@en
skos:definition	quantity given by: [stem%unnumbered] ++++ B_"c" = sqrt((2mu_0(G_"n"-G_"s"))/V) ++++ where stem:[G_"n"] and stem:[G_"s"…
skos:note	In type I superconductors, stem:[B_"c"] is the critical magnetic flux density for disappearance of superconductivity. Th…
isq:hasUnit	T (tesla)kgs^(-2)A^(-1) (kilogram per second squared ampere)
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-12

Related Entities

isq:QuantityShape isq:part-12 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry