Abubuwan Magnetic na Kayan Karfe
Magnetism wani abu ne na halitta wanda ya daɗe yana jan hankalin mutane tsawon ƙarni. Daga alkiblar arewa ta allurar kamfas zuwa ikon ɗaga abubuwa masu nauyi da maganadisu na lantarki, maganadisu yana taka muhimmiyar rawa a fannoni da dama na rayuwar ɗan adam. Ɗaya daga cikin abubuwan da suka fi ban sha'awa na maganadisu shine yadda wasu ƙarfe ke amsawa ga filayen maganadisu. Wannan labarin zai tattauna halayen maganadisu na kayan ƙarfe, nau'ikan kayan maganadisu, halayen maganadisu a cikin ƙarfe daban-daban, da kuma aikace-aikacen waɗannan halayen maganadisu.
Gabatarwa ga Magnetism
Magnetism shine hulɗar da ke tsakanin filin maganadisu da abu. Filin maganadisu filin vector ne wanda ke bayyana tasirin maganadisu a wani takamaiman wuri a sararin samaniya. Ana iya samar da wannan filin ta hanyar wutar lantarki (filin lantarki) ko kuma ta hanyar kayan maganadisu na dindindin. Amsar abu ga filin maganadisu ya dogara ne akan tsarin atomic ɗinsa da tsarin ciki.
Nau'ikan Kayan Magnetic
Ana iya bambanta kayan aiki bisa ga martanin su ga filayen maganadisu zuwa manyan nau'ikan guda uku: diamagnetic, paramagnetic, ferromagnetic, antiferromagnetic, da ferrimagnetic.
1. Mai kama da siffa mai kama da siffa:
Kayan da ke da sifili na maganadisu ba su da sifili na maganadisu idan babu filin maganadisu kuma za su haifar da wani rauni na maganadisu a gaban alkiblar filin waje. Misalan sun haɗa da bismuth da jan ƙarfe. Gabaɗaya, kayan da ke da sifili suna nuna raguwar filin maganadisu kuma ba sa riƙe maganadisu lokacin da aka cire filin waje.
2. Paramagnetic:
Kayan paramagnetic suna da lokutan maganadisu na atom ko na kwayoyin halitta marasa haɗin kai. Idan aka fallasa su ga filin maganadisu, waɗannan kayan suna zama magnet a alkiblar filin. Duk da haka, maganadisu yana da rauni kuma baya dorewa bayan an cire filin waje. Misalan kayan paramagnetic sun haɗa da aluminum, platinum, da manganese.
3. Mai amfani da ferromagnetic:
Ferromagnetism mallakar ƙarfe ne kamar ƙarfe, cobalt, da nickel, wanda ƙwayoyin halitta a cikinsu ke daidaita lokutan maganadisu a hanya ɗaya. Wannan yana haifar da ƙarfin maganadisu koda kuwa babu filin maganadisu na waje. Ferromagnets suna da manyan halaye guda biyu: hysteresis na maganadisu da kuma magnetic retentivity.
4. Maganin hana fata:
A cikin kayan antiferromagnetic, lokutan maganadisu na atoms ko kwayoyin da ke kusa da su suna da alaƙa da junansu, wanda ke haifar da sifili ko ƙananan filayen maganadisu. A yanayin zafi mai ƙasa, antiferromagnetism sau da yawa ya fi karko. Misalin wannan kayan shine magnetite (FeO).
5. Manneki:
Kayan ferrimagnetiki kamar magnetite (Fe3O4) suna da lokutan maganadisu marasa daidaituwa, wanda ke haifar da maganadisu dangane da alkibla. Ferrimagnetism shine tushen kayan yumbu mai maganadisu da yawa da ake amfani da su a fasahar zamani.
Magnetism a cikin Karfe
Kowace nau'in ƙarfe tana da tsarin atomic daban-daban, don haka martaninta ga filayen maganadisu ya bambanta sosai. Karafa da aka fi nazari a kansu a cikin mahallin maganadisu sune ƙarfe, cobalt, nickel, da wasu karafa kamar permaloy (ƙarfe mai kama da nickel-iron).
1. Baƙin ƙarfe (Fe):
Baƙin ƙarfe babban misali ne na ƙarfe mai kama da ferromagnetic. Kwayoyin ƙarfe suna da lokutan maganadisu waɗanda aka shirya su a cikin tsari mai zagaye, wanda ke ba da damar ƙarfe ya ci gaba da riƙe maganadisu idan babu filin waje. A ƙarƙashin wasu yanayi, kamar yanayin zafi a sifili Kelvin, duk lokutan maganadisu na ƙarfe sun daidaita daidai, suna samar da filin maganadisu mai ƙarfi.
2. Cobalt (Co):
Kamar ƙarfe, cobalt shi ma ƙarfe ne mai kama da ferromagnetic. Duk da haka, cobalt yana da tsarin lu'ulu'u daban-daban da ake kira hexagonal close-cup. Wannan tsarin yana ba shi takamaiman halayen maganadisu, gami da zafin Curie mafi girma (kimanin 1388 K idan aka kwatanta da 1043 K na ƙarfe).
3. Nickel (Ni):
Nickel wani ƙarfe ne na ferromagnetic. Nickel yana da tsarin lu'ulu'u mai siffar cubic (fcc) mai tsakiya a fuska, yana ba shi halayen maganadisu kamar ƙarfe amma tare da wasu muhimman bambance-bambance, kamar ƙarancin maganadisu mai jikewa.
4. Alloys na ferromagnetic:
Alloys na waɗannan karafa galibi suna nuna halayen maganadisu na musamman waɗanda ba a samu a cikin abubuwan da aka tsarkake ba. Misali, permaloy yana da manyan halayen maganadisu duk da cewa galibin nickel ne. Wannan ya faru ne saboda haɗakar hulɗar da ke tsakanin atom ɗin nickel da ƙarfe a cikin tsarin ƙarfe.
Aikace-aikacen Magnetic a Rayuwar Yau da Kullum
Magnetism na kayan ƙarfe yana da amfani iri-iri a fannin fasaha da masana'antu na zamani. Wasu daga cikin waɗannan aikace-aikacen sun haɗa da:
1. Ajiye Bayanai:
Ajiye bayanai na maganadisu, kamar a cikin rumbun faifai masu wuya (HDDs) da faifai masu tef, babban amfani ne na halayen ƙarfe masu ferromagnetic. Ana amfani da kayan ferromagnetic don yin rikodin bayanai a cikin nau'in yankunan maganadisu.
2. Janareta da Injinan Wutar Lantarki:
Janaretocin lantarki da injina suna amfani da ƙa'idar shigar da wutar lantarki ta hanyar lantarki. Sau da yawa ana yin rotors da stators a cikin janaretocin da injina da ƙarfe ko wasu ƙarfe masu kama da ferromagnetic don ƙara ingancin canza makamashin lantarki.
3. Na'urar Canza Wutar Lantarki:
Ana amfani da na'urorin canza wutar lantarki don haɓaka da rage ƙarfin lantarki a cikin tsarin rarraba wutar lantarki. Yawancin lokaci ana yin tsakiyar na'urorin canza wutar lantarki da ƙarfe silicon, wanda ke da kyawawan halayen maganadisu don ƙara inganci.
4. Kayan Lantarki da Na'urori Masu auna sigina:
Ferrite wani abu ne na ferrimagnetic da ake amfani da shi a aikace-aikacen lantarki iri-iri, kamar su core eriya ta rediyo, na'urori masu auna filin maganadisu, da inductor.
Penutup
Fahimtar halayen maganadisu na kayan ƙarfe yana da matuƙar muhimmanci ga ci gaban fasahar zamani. Daga kimiyyar lissafi ta asali zuwa aikace-aikace na aiki, maganadisu na kayan ƙarfe ya ci gaba da zama fanni mai ban sha'awa da lada na bincike da kirkire-kirkire. Ta hanyar fahimtar halaye da martanin karafa daban-daban ga filayen maganadisu, za mu iya inganta amfani da su a cikin na'urori da tsarin fasaha iri-iri, a ƙarshe za mu biya buƙatun ɗan adam da inganta rayuwar rayuwa.
