Masu bincike sun lura da wani sabon hali lokacin da kayan maganadisu ya yi zafi.Lokacin da zafin jiki ya tashi, maganadisu na maganadisu a cikin wannan abu yana "daskare" zuwa yanayin tsaye, wanda yawanci yana faruwa lokacin da zafin jiki ya faɗi.Masu binciken sun buga sakamakon bincikensu a mujallar Nature Physics.
Masu bincike sun gano wannan sabon abu a cikin kayan neodymium.Bayan 'yan shekarun da suka gabata, sun bayyana wannan kashi a matsayin "gilashin jujjuyawar kai".Gilashin juzu'i yawanci gwal ɗin ƙarfe ne, alal misali, atom ɗin ƙarfe ana gauraye su ba da gangan ba a cikin grid na atom ɗin jan ƙarfe.Kowane zarra na ƙarfe kamar ƙaramin maganadisu ne, ko juyi.Waɗannan da aka sanya bazuwar juyi suna nuni a wurare daban-daban.
Ba kamar gilashin juzu'i na al'ada ba, waɗanda aka gauraye su ba tare da izini ba tare da kayan maganadisu, neodymium sinadari ne.Idan babu wani abu, yana nuna hali na vitrification a cikin nau'i na crystal.Juyawa yana samar da tsarin juyawa kamar karkace, wanda bazuwar kuma yana canzawa koyaushe.
A cikin wannan sabon binciken, masu bincike sun gano cewa lokacin da suke dumama neodymium daga -268 ° C zuwa -265 ° C, jujjuyawar ta "daskararre" zuwa wani tsari mai mahimmanci, yana samar da magnet a yanayin zafi mafi girma.Yayin da kayan ke yin sanyi, yanayin jujjuyawar da ba a so ya dawo.
"Wannan yanayin 'daskarewa' yawanci ba ya faruwa a cikin kayan maganadisu," in ji Alexander khajetoorians, farfesa na binciken microscope a Jami'ar Radboud a Netherlands.
Yanayin zafi yana ƙara ƙarfi a cikin daskararru, ruwa, ko gas.Hakanan ya shafi maganadisu: a yanayin zafi mafi girma, juyawa yawanci yana farawa.
Khajetoorians ya ce, "halayen maganadisu na neodymium da muka lura a zahiri ya saba wa abin da ke faruwa" kullum.""Wannan ya sabawa ilhama, kamar dai yadda ruwa ke juya kankara lokacin zafi."
Wannan al'amari na rashin fahimta ba ya zama ruwan dare a yanayi - 'yan kayan da aka sani suna nuna halin da ba daidai ba.Wani sanannen misali shine gishirin Rochelle: cajin sa yana samar da tsari da aka ba da umarni a yanayin zafi mai girma, amma ana rarraba shi ba tare da izini ba a ƙananan yanayin zafi.
Hadadden bayanin ka'idar gilashin juzu'i shine jigon kyautar Nobel ta 2021 a kimiyyar lissafi.Fahimtar yadda waɗannan tabarau ke aiki shima yana da mahimmanci ga sauran fannonin kimiyya.
Khajetoorians ya ce, "idan a ƙarshe za mu iya kwaikwayi halayen waɗannan kayan, hakanan yana iya haifar da ɗabi'ar wasu kayan da yawa."
Halin da ake iya yi na eccentric yana da alaƙa da ra'ayi na lalata: yawancin jihohi daban-daban suna da makamashi iri ɗaya, kuma tsarin ya zama takaici.Zazzabi na iya canza wannan yanayin: takamaiman yanayi kawai ya wanzu, yana barin tsarin ya shigar da yanayin a sarari.
Ana iya amfani da wannan bakon ɗabi'a a cikin sabbin ma'ajin bayanai ko dabaru na kwamfuta, kamar ƙwaƙwalwa kamar kwamfuta.
Lokacin aikawa: Agusta-05-2022
