{"id":20297,"date":"2021-03-23T23:40:07","date_gmt":"2021-03-23T23:40:07","guid":{"rendered":"https:\/\/www.upjs.sk\/prirodovedecka-fakulta\/pracoviska\/ufv\/vv\/infr\/laboratorium-vsm\/"},"modified":"2022-11-13T21:31:11","modified_gmt":"2022-11-13T20:31:11","slug":"laboratorium-vsm","status":"publish","type":"cpt_pracoviska","link":"https:\/\/www.upjs.sk\/prirodovedecka-fakulta\/pracoviska\/ustavy-pf\/ufv\/vv\/infr\/laboratorium-vsm\/","title":{"rendered":"Laborat\u00f3rium VSM"},"content":{"rendered":"
Laborat\u00f3rium magnetick\u00fdch meran\u00ed je laborat\u00f3riom \u00dastavu experiment\u00e1lnej fyziky SAV prev\u00e1dzkovan\u00fdm pod veden\u00edm RNDr. Jozefa Kov\u00e1\u010da, CSc.
\u00a0<\/p>\n
Laborat\u00f3rium je umiestnen\u00e9 v priestoroch \u00dastavu fyzik\u00e1lnych vied Pr\u00edrodovedeckej fakulty UPJ\u0160 v Ko\u0161iciach, Park Angelinum 9.
\u00a0<\/p>\n
V Laborat\u00f3riu VSM je umiestnen\u00fd prv\u00fd a najstar\u0161\u00ed vibra\u010dn\u00fd magnetometer skon\u0161truovan\u00fd na pracovisk\u00e1ch PF UPJ\u0160 a \u00daEF SAV. Dlh\u00e9 roky bol prakticky jedin\u00fdm zariaden\u00edm na uveden\u00fdch pracovisk\u00e1ch, ktor\u00e9 umo\u017e\u0148ovalo charakterizova\u0165 materi\u00e1ly z h\u013eadiska ich magnetick\u00fdch vlastnost\u00ed. Aj ke\u010f v porovnan\u00ed s modernej\u0161\u00edmi zariadeniami s podobn\u00fdm zameran\u00edm sa tento vibra\u010dn\u00fd magnetometer nevyzna\u010duje extr\u00e9mnou citlivos\u0165ou ani presnos\u0165ou merania, jeho prednos\u0165ami s\u00fa predov\u0161etk\u00fdm r\u00fdchlos\u0165, jednoduchos\u0165 a flexibilita pri ovl\u00e1dan\u00ed. To sa v s\u00fa\u010dasnosti vyu\u017e\u00edva najm\u00e4 pri z\u00e1kladnej charakteriz\u00e1cii vysokoteplotn\u00fdch supravodiv\u00fdch materi\u00e1lov \u2013 ur\u010dovan\u00ed kritickej teploty, kritick\u00e9ho pr\u00fadu, kritick\u00e9ho magnetick\u00e9ho po\u013ea a podobne. \u010ealej je mo\u017en\u00e9 na tomto zariaden\u00ed mera\u0165 termomagnetick\u00e9 krivky feromagnetick\u00fdch materi\u00e1lov a\u017e do tepl\u00f4t 1200 K. Z t\u00fdchto meran\u00ed je mo\u017en\u00e9 ur\u010di\u0165 napr. Curieho teplotu prechodu do paramagnetick\u00e9ho stavu, kry\u0161taliza\u010dn\u00fa teplotu u amorfn\u00fdch kovov\u00fdch materi\u00e1lov, viacf\u00e1zovos\u0165 materi\u00e1lu v pr\u00edpade, \u017e jednotliv\u00e9 f\u00e1zy maj\u00fa v danej teplotnej oblasti feromagnetick\u00fd prechod a \u010fal\u0161ie parametre s\u00favisiace s magnetick\u00fdmi vlastnos\u0165ami l\u00e1tok. Samozrejmos\u0165ou je meranie hyster\u00e9znych slu\u010diek feromagnetick\u00fdch materi\u00e1lov v celom teplotnom intervale a z toho vypl\u00fdvaj\u00face ur\u010dovanie teplotnej z\u00e1vislosti koercivity, magnetiz\u00e1cie nas\u00fdtenia ako aj \u010fal\u0161\u00edch s\u00favisiacich parametrov. Pre odborn\u00fa verejnos\u0165 m\u00f4\u017ee by\u0165 zauj\u00edmav\u00e1 ponuka r\u00fdchlych testovac\u00edch meran\u00ed vzoriek feromagnetick\u00fdch materi\u00e1lov o rozmeroch do 5 mm a hmotnosti do 1 gramu a ur\u010dovanie ich magnetick\u00fdch vlastnost\u00ed na z\u00e1klade nameran\u00fdch termomagnetick\u00fdch a magnetiza\u010dn\u00fdch kriviek.
V s\u00fa\u010dasnosti je mo\u017en\u00e9 na tomto zariaden\u00ed mera\u0165 magnetick\u00fd moment r\u00f4znych druhov materi\u00e1lov v r\u00f4znej forme (pevne l\u00e1tky, pr\u00e1\u0161ky, kvapaliny) v teplotnom intervale 4,2 a\u017e 1200 K a v magnetick\u00fdch poliach do 6 T. V t\u00fdchto pracovn\u00fdch intervaloch je mo\u017en\u00e9 sledova\u0165 po\u013en\u00e9, teplotn\u00e9 a \u010dasov\u00e9 z\u00e1vislosti magnetick\u00e9ho momentu meran\u00fdch vzoriek ako aj ich kombin\u00e1cie. Maxim\u00e1lna citlivos\u0165 zariadenia je 10-7<\/sup> Am2<\/sup> (10-4<\/sup> emu).
\u00a0<\/p>\nV\u00fdskumn\u00e9 mo\u017enosti<\/strong><\/h4>\n
\u00a0<\/p>\nPonuka meran\u00ed odbornej verejnosti<\/strong><\/h4>\n
\u00a0<\/p>\nFotogal\u00e9ria<\/strong><\/h4>\n","protected":false},"author":1,"featured_media":15067,"parent":20272,"menu_order":22,"template":"","meta":{"_acf_changed":false,"_editorskit_title_hidden":false,"_editorskit_reading_time":0,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}"},"categories":[],"tags":[],"tax_aktuality":[],"class_list":["post-20297","cpt_pracoviska","type-cpt_pracoviska","status-publish","has-post-thumbnail","hentry"],"acf":{"acf_link_na_externy_obsah":""},"yoast_head":"\n