Hi Maryam

This is such a vague question.

Do you mean an atom of cobalt. Or a nanoparticle, or nanoparticles, or the bulk, which crystal phase and what is the shape of the material. What calculation are you trying to do that you need this. Also, I assume you mean that you want to know about the coercivity (Hc) of cobalt rather than about hexagonal close packed (hcp) cobalt? If you as a detailed question you are more likely to get a useful answer.

Good luck

I do agree with johanna as regard to importance of the information she is requesting to give approximate answer for the Coercivity of Co. The coercivity of the Co element is different from the their nanoparticles, thin film , bulk material, nanorods and so on, as Hc value depends on the anisotropy that changes depends on the materials shape. However, the contribution of Co element to the coercivity is assumed to be high due to the fact that in most of what is classified as hard magnetic materials, Co element contribution is vivid. Besides, Co element is one of four elements that are considered naturally magnetic.

Thanks for helps,i create co nanowires and now i want to khow the diffrence between co element and nanowires of this.i want to compare the magnetic properties,can you help me?

Best

Dear Mrs Behzadi,

What kind of magnetic parameter you will want to compare?

i want to compare the Hc of them.i have the loop of cobalt nanowires and i khow the Hc.but cobalt element has constant Hc,isnt it?

i want to khow it.

thanks

I sent some related articles for you by e-mail.

Thank you

Maryam, some values of Hc for Co and Co alloys were obtained by S, Armyanov. Electrochimica Acta 45 (2000) 3323 – 3335.

Thanks for your help

Dear Maryam,

Here already discussed the same question. Look discussion at this link

https://www.researchgate.net/post/Coercivity_field_of_bulk_metallic_hcp_and_fcc_Co