| dbo:abstract |
Transition temperature is the temperature at which a material changes from one crystal state (allotrope) to another. More formally, it is the temperature at which two crystalline forms of a substance can co-exist in equilibrium. For example, when rhombic sulfur is heated above 95.6 °C, it changes form into monoclinic sulfur; when cooled below 95.6 °C, it reverts to rhombic sulfur. At 95.6 °C the two forms can co-exist. Another example is tin, which transitions from a cubic crystal below 13.2 °C to a tetragonal crystal above that temperature. In the case of ferroelectric or ferromagnetic crystals, a transition temperature may be known as the Curie temperature. (en) 転移温度（てんいおんど、Transition temperature）は相転移を起こす温度のこと。転移温度を Tc と書くこともあるが、異なる場合もある（例：反強磁性におけるネール温度を TN と書いたりする）。 超伝導において、常伝導から超伝導、超伝導から常伝導に相転移する温度のことを超伝導転移温度、あるいは転移温度という。または、臨界温度ともいう。記号はどちらも Tc (critical temperature) を使う。 この Tc は、BCS理論の中でも最も有名な次の理論式、デバイ温度 ΘD 、状態密度 N(0) 、相互作用強さ V で表される。 Tc=1.13 ΘD*exp(-1/N(0)V) (ja) |
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| rdfs:comment |
転移温度（てんいおんど、Transition temperature）は相転移を起こす温度のこと。転移温度を Tc と書くこともあるが、異なる場合もある（例：反強磁性におけるネール温度を TN と書いたりする）。 超伝導において、常伝導から超伝導、超伝導から常伝導に相転移する温度のことを超伝導転移温度、あるいは転移温度という。または、臨界温度ともいう。記号はどちらも Tc (critical temperature) を使う。 この Tc は、BCS理論の中でも最も有名な次の理論式、デバイ温度 ΘD 、状態密度 N(0) 、相互作用強さ V で表される。 Tc=1.13 ΘD*exp(-1/N(0)V) (ja) Transition temperature is the temperature at which a material changes from one crystal state (allotrope) to another. More formally, it is the temperature at which two crystalline forms of a substance can co-exist in equilibrium. For example, when rhombic sulfur is heated above 95.6 °C, it changes form into monoclinic sulfur; when cooled below 95.6 °C, it reverts to rhombic sulfur. At 95.6 °C the two forms can co-exist. Another example is tin, which transitions from a cubic crystal below 13.2 °C to a tetragonal crystal above that temperature. (en) |
| rdfs:label |
転移温度 (ja) Transition temperature (en) |
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