Inreversible Temperature Coeffficients: Nqa 20° C thiab 120° C ua piv txwv no,
Α (Br) =(12.07-13.39) ÷13.39 / (120 ° C - 20 ° C) x 100%
Remanence = Br
Coercive Force = Hcb
Instrinsic Coercive Force = Hcj
Hais ntau zog Product=BH(max)
Kub Curie:
Curie-Weiss txoj cai yog ib qho adapted version ntawm Curieand #39; s txoj cai lij choj.
Curie-Weiss txoj cai yog ib tug yooj yim qauv derived ntawm tus phem-teb approximation, qhov no txhais tau hais tias nws ua haujlwm zoo kom cov khoom kub, T, loj dua lawv coj Curie kub, Tc, xws liT andgt; andgt; Tc; tiam sis tsis qhia txog qhovsib nqusnyhav, χ, nyob ntawm Curie kis vim yog lub fluctuations ntawm atoms.
Leej Curieand #39; s txoj cai thiab txoj cai Curie-Weiss tsis tuav rau Tandlt; Tc.
Curieand #39; s txoj cai lij choj rau ib paramagnetic khoom tawg yooj yim;
| Txhais | |
|---|---|
| χ | sib nqus nyhav; cawv txog ib applied magnetic teb nyob rau ib qhov khoom |
| M | moments magnetic ib chav tsev ntim |
| H | teb magnetic macroscopic |
| B | magnetic teb |
| C | cov khoom siv qhia tseeb Curie tsi hloov |
| µ0 | lub chaw dawb permeability. Ceeb toom - nyob rau hauv chav nyob CGS no yuav tau muab tus.[24] |
| g | rau lub Landé g-tau |
| J(J+1) | cov eigenvalue rau eigenstate J2rau cov kas nyob ruaj ruaj tsis pub dhau lub atoms tsis tag zoo li tus hniav (yuav tau electrons unpaired) |
| µB | lub Bohr Magneton |
| kB | Boltzmannand #39; s tsis tu ncua |
| magnetism tag nrho | yog tau N cov magnetic moments ib chav tsev ntim |
Curie-Weiss txoj cai no ces derived ntawm Curieand #39; s txoj cai yuav tsum
qhov twg
Λ yog ib qho chaw Weiss molecular teb.
| Khoom siv | Curie kub (K) |
|---|---|
| Hlau (Fe) | 1043 |
| Cobalt (Co) | 1400 |
| Npib tsib xee (Ni) | 631 |
| Gadolinium (Gd) | 292 |
| Dysprosium (Dy) | 88 |
| MnBi | 630 |
| MnSb | 587 |
| CrO2 | 386 |
| MnAs | 318 |
| EuO | 69 |
| Iron(iii) oxide (Fe2O3) | 948 |
| Iron(II,III) oxide (FeOFe2O3) | 858 |
| NiOFe2O3 | 858 |
| CuOFe2O3 | 728 |
| MgOFe2O3 | 713 |
| MnOFe2O3 | 573 |
| Y3Fe5O12 | 560 |
Shanghai cov hlau nplaum Co., Ltd yog ib lub MagnetManufacturerin suav uas tau nrog sib nqus khoom for10 yesars, muaj ib xyoos ntau lawm tau yog 800Tons.
Ourmain productsare Sintered lawmHlau nplaum Neodymium-Ferrum-Boron(NdFeB), Hlau nplaum samarium - Cobalt(SmCo), Aluminum-Nickel-Cobalt(AlNiCo) hlau nplaum andrelated assemblings.
NtauHlau nplaum Nefebkhoom muag qhia：http://www.ndfebmagnet.net/ndfeb-magnets