Product details
Model Number: GK-318
Brand Name: GENPHOAL
Key Specifications/Special Features:
Terbium is a chemical element with symbol TB and atomic number 65Silvery-white rare earth metal that is malleable, ductile and very hardTerbium is never found in nature as a free element, but it is contained in many minerals, including cerite, gadolinite, monazite, xenotime and euxeniteTerbium is used to dope calcium fluoride, calcium tungstate and strontium molybdate, materials that are used in solid-state devices and as crystal stabilizer of fuel cells which operate at elevated temperaturesAs component of terfenol-D (an alloy that expands and contracts when exposed to magnetic fields more than any other alloy), terbium is of use in actuators, in naval sonar systems and in sensorsMost of the world's terbium supply is used in green phosphorsTerbium oxide is in fluorescent lamps and TV tubesTerbium green phosphors are combined with divalent europium blue phosphors and trivalent europium red phosphors to provide trichromatic lighting technology, high-efficiency white light used for standard illumination in indoor lightingPhysical properties [edit]
Terbium is a silvery-white rare earth metal that is malleable, ductile and soft enough to be scratched with a knife
Relatively stable in air as compared to other lanthanides
[1] Terbium exists in two crystal allotropes with a transformation temperature of 1289 °C between them
[2] Terbium (III) cation is brilliantly fluorescent, in bright lemon-yellow color that is the result of a strong green emission line in combination with other lines in the orange and red
Yttrofluorite variety of the mineral fluorite owes its creamy-yellow fluorescence in part to terbium
Terbium easily oxidizes, and is therefore used in its elemental form specifically for research
Single TB atoms have been isolated by implanting them into fullerene molecules
[3]Terbium has a simple ferromagnetic ordering at temperatures below 219K
Above 219K, it turns into helical antiferromagnetic state in which all of the atomic moments in particular basal plane layer are parallel and oriented at fixed angle to the moments of adjacent layers
This unusual antiferromagnetism transforms into a disordered paramagnetic state at 230K
[4]Chemical properties [edit]
Most common valence state of terbium is +3, as in TB
2O
3. +4 state is known in TbO2 and TbF4
[5][6] Terbium burns readily to form mixed terbium (III, IV) oxide
[7]8 Tb + 7 O2 → 2 Tb4O7
In solution, terbium forms only trivalent ions
Terbium is quite electropositive and reacts slowly with cold water and quite quickly with hot water to form terbium hydroxide
[7]2 Tb (s) + 3 H2SO4 → 2 Tb3+ + 3 SO2
4 + 3 H2↑
Terbium is a silvery-white rare earth metal that is malleable, ductile and soft enough to be scratched with a knife
Relatively stable in air as compared to other lanthanides
[1] Terbium exists in two crystal allotropes with a transformation temperature of 1289 °C between them
[2] Terbium (III) cation is brilliantly fluorescent, in bright lemon-yellow color that is the result of a strong green emission line in combination with other lines in the orange and red
Yttrofluorite variety of the mineral fluorite owes its creamy-yellow fluorescence in part to terbium
Terbium easily oxidizes, and is therefore used in its elemental form specifically for research
Single TB atoms have been isolated by implanting them into fullerene molecules
[3]Terbium has a simple ferromagnetic ordering at temperatures below 219K
Above 219K, it turns into helical antiferromagnetic state in which all of the atomic moments in particular basal plane layer are parallel and oriented at fixed angle to the moments of adjacent layers
This unusual antiferromagnetism transforms into a disordered paramagnetic state at 230K
[4]Chemical properties [edit]
Most common valence state of terbium is +3, as in TB
2O
3. +4 state is known in TbO2 and TbF4
[5][6] Terbium burns readily to form mixed terbium (III, IV) oxide
[7]8 Tb + 7 O2 → 2 Tb4O7
In solution, terbium forms only trivalent ions
Terbium is quite electropositive and reacts slowly with cold water and quite quickly with hot water to form terbium hydroxide
[7]2 Tb (s) + 3 H2SO4 → 2 Tb3+ + 3 SO2
4 + 3 H2↑
Shipping Information:
- FOB Port: Shekou Shenzhen
- Lead Time: 1 - 6 days
- HTS Code: 2918.99.00 90
Main Export Markets:
- Asia
- Australasia
- Central/South America
- Eastern Europe
- Mid East/Africa
- North America
- Western Europe
