Qhov sib txawv tseem ceeb ntawm paramagnetic thiab superparamagnetic yog qhov sib nqus ntawm cov khoom siv superparamagnetic yog qhov loj dua piv rau cov khoom siv paramagnetic.
Lub sij hawm paramagnetic yog hais txog qee cov ntaub ntawv uas tsis muaj zog txaus rau sab nraud siv cov hlau nplaum uas lawv sab hauv tau ntxias cov hlau nplaum hauv cov kev taw qhia ntawm cov khoom siv hlau nplaum. Lub sij hawm superparamagnetic, ntawm qhov tod tes, hais txog daim ntawv ntawm cov hlau nplaum uas tshwm nyob rau hauv me me ferromagnetic los yog ferrimagnetic nanoparticles.
Magnetic susceptibility yog hais txog qhov ntsuas ntawm qhov ntau npaum li cas cov khoom tuaj yeem ua magnetized nyob rau hauv daim ntawv thov magnetic teb. Peb tuaj yeem piav qhia nws raws li qhov sib piv ntawm qhov piv ntawm kev sib nqus ntawm qhov sib nqus thiab siv cov hlau nplaum siv qhov siv.
YParamagnetic yog dab tsi?
Lub sij hawm paramagnetic yog hais txog qee cov ntaub ntawv uas tsis muaj zog txaus rau sab nraud siv cov hlau nplaum uas lawv sab hauv tau ntxias cov hlau nplaum hauv cov kev taw qhia ntawm cov khoom siv hlau nplaum. Nws yog ib hom hlau nplaum, thiab lwm yam ntaub ntawv loj xws li diamagnetic thiab ferromagnetic cov ntaub ntawv. Cov ntaub ntawv Paramagnetic feem ntau suav nrog cov tshuaj lom neeg thiab qee cov khoom sib txuas uas muaj cov sib nqus sib nqus permeability me ntsis siab dua 1. Yog li, cov ntaub ntawv no tau ntxim nyiam rau cov chaw sib nqus.
Daim duab 01: Paramagnetism ntawm Molecular Oxygen, raws li qhia los ntawm Kev Txaus Siab ntawm Cov Kua Dej rau Cov Hlau nplaum
Feem ntau cov atoms uas tsis tiav atomic orbitals yog paramagnetic vim hais tias paramagnetism tshwm sim vim muaj cov tsis muaj electrons nyob rau hauv cov khoom. Txawm li cas los xij, tuaj yeem muaj qee qhov kev zam, xws li tooj liab. Cov kiv cua ntawm unpaired electrons nyiam muaj lub sij hawm sib nqus dipole, uas ua rau lawv ua zoo li cov hlau nplaum me me. Tsis tas li ntawd, cov spines ntawm electrons sib npaug mus rau lub magnetic teb thaum muaj ib qho chaw sib nqus sab nraud. Qhov no ua rau muaj kev ntxim nyiam.
Txawm li cas los xij, paramagnets tsis khaws ib qho kev sib nqus thaum tsis muaj qhov sib nqus sab nraud vim tias lub thermal txav uas randomizes spin orientations. Yog li ntawd, tag nrho cov magnetization nyhav poob mus rau xoom thaum tshem tawm ntawm daim ntawv thov magnetic.
Superparamagnetic yog dab tsi?
Lub sij hawm superparamagnetic yog hais txog daim ntawv ntawm cov hlau nplaum uas tshwm nyob rau hauv me me ferromagnetic los yog ferrimagnetic nanoparticles. Nws kuj yog ib hom hlau nplaum. Feem ntau, nyob rau hauv me me nanoparticles, magnetization yuav random tig cov kev taw qhia thaum muaj kev cuam tshuam los ntawm kub. Peb hu lub sij hawm ib txwm nyob nruab nrab ntawm ob flips li Neel so lub sij hawm.
Daim duab 02: Maghemite Silica Nanoparticle Cluster
Thaum tsis muaj qhov sib nqus sab nraud, lub sijhawm uas peb siv los ntsuas qhov sib nqus ntawm cov nanoparticles ntev dua li lub sijhawm so Neel, yog li lawv cov hlau nplaum zoo li qhov nruab nrab xoom. Lub xeev no hu ua lub xeev superparamagnetic. Thaum lub xeev no tshwm sim, ib qho chaw sib nqus sab nraud tuaj yeem ua kom cov nanoparticles zoo ib yam li cov paramagnet. Tsis tas li ntawd, qhov sib nqus susceptibility ntawm cov khoom siv superparamagnetic yog loj dua piv rau cov paramagnet.
Qhov txawv ntawm Paramagnetic thiab Superparamagnetic yog dab tsi?
Magnetic susceptibility yog hais txog qhov ntsuas ntawm qhov ntau npaum li cas cov khoom tuaj yeem ua magnetized nyob rau hauv daim ntawv thov magnetic teb. Peb tuaj yeem piav qhia nws raws li qhov sib piv ntawm qhov piv ntawm kev sib nqus ntawm qhov sib nqus thiab qhov kev siv magnetizing siv. Qhov sib txawv tseem ceeb ntawm paramagnetic thiab superparamagnetic yog qhov sib nqus ntawm cov khoom siv superparamagnetic yog qhov loj dua piv rau cov khoom siv paramagnetic.
Cov hauv qab no infographic nthuav tawm qhov sib txawv ntawm paramagnetic thiab superparamagnetic hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Paramagnetic vs Superparamagnetic
Lub sij hawm paramagnetic yog hais txog qee cov ntaub ntawv uas muaj qhov tsis muaj zog rau sab nraud siv cov hlau nplaum sab hauv, lawv tau ntxias cov hlau nplaum hauv cov kev taw qhia ntawm cov khoom siv hlau nplaum. Lub sij hawm superparamagnetic yog hais txog daim ntawv ntawm cov hlau nplaum uas tshwm nyob rau hauv me me ferromagnetic los yog ferrimagnetic nanoparticles. Qhov sib txawv tseem ceeb ntawm paramagnetic thiab superparamagnetic yog qhov sib nqus ntawm cov khoom siv superparamagnetic yog qhov loj dua piv rau cov khoom siv paramagnetic.
