<html>
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-2">
<meta content="MSHTML 6.00.2900.3268" name="GENERATOR">
<style></style>
</head>
<body bgcolor="#ffffff" text="#000000">
<div><font face="Arial" size="2">
<table style="WIDTH: 18cm; mso-cellspacing: 0cm;
mso-padding-alt: 5.25pt 5.25pt 5.25pt 5.25pt" border="0"
cellpadding="0" cellspacing="0" width="680">
<tbody>
<tr>
<td style="BORDER-RIGHT: #e0dfe3; PADDING-RIGHT: 5.25pt;
BORDER-TOP: #e0dfe3; PADDING-LEFT: 5.25pt;
PADDING-BOTTOM: 5.25pt; BORDER-LEFT: #e0dfe3; WIDTH:
453.75pt; PADDING-TOP: 5.25pt; BORDER-BOTTOM: #e0dfe3;
BACKGROUND-COLOR: transparent" valign="top" width="605">
<p style="MARGIN: 3.1pt 0cm; TEXT-ALIGN: center"
align="center"><span style="FONT-FAMILY: 'Century
Gothic'"><img
src="cid:part1.09070800.01000703@ifs.hr"
v:shapes="_x0000_i1025" height="32" width="32"><img
src="cid:part2.05050002.04090001@ifs.hr"
v:shapes="_x0000_i1026" height="85" width="390"><!--?xml:namespace prefix = o ns =
"urn:schemas-microsoft-com:office:office" /--><o:p></o:p></span></p>
<p class="MsoNormal" style="MARGIN: 3pt 0cm; TEXT-ALIGN:
center" align="center"><b style="mso-bidi-font-weight:
normal"><span style="COLOR: #5f5f5f; FONT-FAMILY:
'Century Gothic'">Institut za fiziku, Bijenička
cesta 46,<o:p></o:p></span></b></p>
<p class="MsoNormal" style="MARGIN: 3pt 0cm; TEXT-ALIGN:
center" align="center"><b style="mso-bidi-font-weight:
normal"><span style="COLOR: #5f5f5f; FONT-FAMILY:
'Century Gothic'">predavaonica u zgradi Mladen
Paić<o:p></o:p></span></b></p>
<p class="MsoNormal" style="MARGIN: 3pt 0cm; TEXT-ALIGN:
center" align="center"><b style="mso-bidi-font-weight:
normal"><span style="COLOR: #5f5f5f; FONT-FAMILY:
'Century Gothic'"> <o:p></o:p></span></b></p>
<p class="MsoNormal" style="MARGIN: 3pt 0cm; TEXT-ALIGN:
center" align="center"><b style="mso-bidi-font-weight:
normal"><span style="COLOR: #5f5f5f; FONT-FAMILY:
'Century Gothic'"> <o:p></o:p></span></b></p>
<p style="MARGIN: 3.1pt 0cm; TEXT-ALIGN: center"
align="center"><b style="mso-bidi-font-weight: normal"><span
style="FONT-SIZE: 14pt; COLOR: #993300;
FONT-FAMILY: 'Century Gothic'">u ponedjeljak, 30.
travnja 2012. u 15:00 sati</span></b><span
style="FONT-FAMILY: 'Century Gothic'"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style="BORDER-RIGHT: #e0dfe3; PADDING-RIGHT: 5.25pt;
BORDER-TOP: #e0dfe3; PADDING-LEFT: 5.25pt;
PADDING-BOTTOM: 5.25pt; BORDER-LEFT: #e0dfe3; WIDTH:
453.75pt; PADDING-TOP: 5.25pt; BORDER-BOTTOM: #e0dfe3;
BACKGROUND-COLOR: transparent" valign="top" width="605">
<p style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 14pt;
TEXT-ALIGN: center; mso-line-height-rule: exactly"
align="center"><b><span style="FONT-SIZE: 16pt; COLOR:
#55913c; mso-bidi-font-size: 12.0pt"><font
face="Arial Unicode MS"> <o:p></o:p></font></span></b></p>
<p style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 14pt;
TEXT-ALIGN: center; mso-line-height-rule: exactly"
align="center"><font face="Arial Unicode MS"><b><span
style="FONT-SIZE: 16pt; COLOR: #55913c;
mso-bidi-font-size: 14.0pt">Javno predavanje o
rezultatima <i>Postdoc</i> projekta Hrvatske
zaklade za znanost: ’Proučavanje magnetskog
uređenja u sustavu sa spinskim lancima CuSe2O5
tehnikama magnetske rezonancije’</span></b><b><span
style="FONT-SIZE: 16pt; COLOR: #55913c;
FONT-FAMILY: 'Century Gothic'; LETTER-SPACING:
-0.7pt; mso-bidi-font-size: 12.0pt"><o:p></o:p></span></b></font></p>
</td>
</tr>
<tr>
<td style="BORDER-RIGHT: #e0dfe3; PADDING-RIGHT: 5.25pt;
BORDER-TOP: #e0dfe3; PADDING-LEFT: 5.25pt;
PADDING-BOTTOM: 5.25pt; BORDER-LEFT: #e0dfe3; WIDTH:
453.75pt; PADDING-TOP: 5.25pt; BORDER-BOTTOM: #e0dfe3;
BACKGROUND-COLOR: transparent" valign="top" width="605">
<p style="MARGIN: 5.95pt 0cm 0pt; LINE-HEIGHT: 14pt;
TEXT-ALIGN: center; mso-line-height-rule: exactly"
align="center"><font face="Arial Unicode MS"><span
class="object"><b><span style="FONT-SIZE: 14pt;
COLOR: black; mso-bidi-font-size: 12.0pt">dr.
sc. Mirta Herak</span></b></span><b><span
style="FONT-SIZE: 14pt; mso-bidi-font-size:
12.0pt"><o:p></o:p></span></b></font></p>
</td>
</tr>
<tr>
<td style="BORDER-RIGHT: #e0dfe3; PADDING-RIGHT: 5.25pt;
BORDER-TOP: #e0dfe3; PADDING-LEFT: 5.25pt;
PADDING-BOTTOM: 5.25pt; BORDER-LEFT: #e0dfe3; WIDTH:
453.75pt; PADDING-TOP: 5.25pt; BORDER-BOTTOM: #e0dfe3;
BACKGROUND-COLOR: transparent" valign="top" width="605">
<p style="LINE-HEIGHT: 15pt; TEXT-ALIGN: center;
mso-line-height-rule: exactly" align="center"><font
face="Arial Unicode MS"><b><span style="FONT-SIZE:
13pt; mso-bidi-font-size: 8.0pt">Institut za
fiziku, Zagreb</span></b><b
style="mso-bidi-font-weight: normal"><span
style="FONT-SIZE: 13pt; mso-bidi-font-size:
12.0pt; mso-ansi-language: EN-US" lang="EN-US"><o:p></o:p></span></b></font></p>
<p style="MARGIN: 5.95pt 0cm 0pt; TEXT-ALIGN: center"
align="center"><b><i><span style="FONT-SIZE: 11pt;
FONT-FAMILY: 'Century Gothic';
mso-bidi-font-size: 12.0pt">E-mail:</span></i></b><span
style="FONT-SIZE: 9pt; COLOR: #333333;
mso-ansi-language: EN"><font face="Arial Unicode MS">
</font></span><b><i><span style="FONT-SIZE: 11pt;
COLOR: #333333; FONT-FAMILY: 'Century Gothic';
mso-bidi-font-size: 9.0pt; mso-ansi-language:
EN" lang="EN"><a href="mailto:petek@pitt.edu">mirta@ifs.hr</a></span></i></b><b><i><span
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Century
Gothic'; mso-bidi-font-size: 12.0pt" lang="EN">
</span></i></b><b><span style="FONT-SIZE: 11pt;
COLOR: black; FONT-FAMILY: 'Century Gothic';
mso-bidi-font-size: 12.0pt"><o:p></o:p></span></b></p>
</td>
</tr>
<tr>
<td style="BORDER-RIGHT: #e0dfe3; PADDING-RIGHT: 5.25pt;
BORDER-TOP: #e0dfe3; PADDING-LEFT: 5.25pt;
PADDING-BOTTOM: 5.25pt; BORDER-LEFT: #e0dfe3; WIDTH:
453.75pt; PADDING-TOP: 5.25pt; BORDER-BOTTOM: #e0dfe3;
BACKGROUND-COLOR: transparent" valign="top" width="605">
<p style="margin-bottom: 0cm; line-height: 150%;"><b><span
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Century
Gothic'"> </span></b><font color="#000000"><font
face="Arial, sans-serif"><font size="2"><span
lang="en-US"><b>U predavanju će biti
predstavljeni rezultati jednogodišnjeg
projekta </b></span></font></font></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><i><b>Proučavanje
magnetskog uređenja u sustavu sa spinskim
lancima CuSe</b></i></span></font></font></font><font
color="#000000"><sub><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><i><b>2</b></i></span></font></font></sub></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><i><b>O</b></i></span></font></font></font><font
color="#000000"><sub><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><i><b>5</b></i></span></font></font></sub></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><i><b> tehnikama
magnetske rezonancije</b></i></span></font></font></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b> koji je
financiran u okviru </b></span></font></font></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><i><b>Postdoc</b></i></span></font></font></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b> programa
Hrvatske zaklade za znanost. Projekt je
najvećim dijelom proveden na Institutu Jožef
Stefan u Ljubljani. U okviru projekta
proučavan je novi jednodimenzionalni
magnetski sustav CuSe</b></span></font></font></font><font
color="#000000"><sub><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b>2</b></span></font></font></sub></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b>O</b></span></font></font></font><font
color="#000000"><sub><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b>5</b></span></font></font></sub></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b> eksperimentalnim
tehnikama elektronske spinske rezonancije
(ESR), mionske spinske relaksacije (muSR),
nuklearne magnetske rezonancije (NMR), a
načinjena su i mjerenja neutronskog
raspršenja i magnetske susceptibilnosti.
Magnetizam u CuSe</b></span></font></font></font><font
color="#000000"><sub><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b>2</b></span></font></font></sub></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b>O</b></span></font></font></font><font
color="#000000"><sub><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b>5</b></span></font></font></sub></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b> dolazi od
spinova S = ½ iona bakra Cu</b></span></font></font></font><font
color="#000000"><sup><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b>2+</b></span></font></font></sup></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b>. Izotropna
energija interakcije između spinova na lancu
u ovom sustavu iznosi J = 160 K, a prisustvo
relativno slabe međulančane interakcije J'=
0.1 J rezultira dugodosežnim
antiferomagnetskim uređenjem ispod T</b></span></font></font></font><font
color="#000000"><sub><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b>N</b></span></font></font></sub></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b> = 17 K. Utjecaj
slabe anizotropije energije izmjene presudan
je za odabir osnovnog stanja u ovom sustavu.
Iz rezultata ESR mjerenja u paramagnetskom
stanju u širokom frekventnom području
određen je anizotropni spinski hamiltonijan
CuSe</b></span></font></font></font><font
color="#000000"><sub><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b>2</b></span></font></font></sub></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b>O</b></span></font></font></font><font
color="#000000"><sub><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b>5</b></span></font></font></sub></font><font
color="#000000"><font face="Arial, sans-serif"><font
size="2"><span lang="en-US"><b> [1]. Uređeno
stanje ispitivano je bez primjene magnetskog
polja mjerenjima muSR-a i elastičnog
neutronskog raspršenja, te mjerenjima
antiferomagnetske rezonancije (AFMR), NMR-a
i susceptibilnosti koja se vrše u konačnom
magnetskom polju. Rezultati pokazuju da je
uređenje relativno jednostavno sumjerljivo
antiferomagnetsko, a spinska reorijentacija
događa se u niskim magnetskim poljima, H =
1.3 T [2]. U predavanju će biti uspoređeni
rezultati različitih tehnika uz osvrt na
njihove prednosti i nedostatke.<br>
</b></span></font></font></font></p>
<p style="margin-bottom: 0cm; line-height: 150%;">
<meta http-equiv="CONTENT-TYPE" content="text/html;
charset=ISO-8859-2">
</p>
<p style="margin-bottom: 0cm; line-height: 150%">
<title></title>
<meta name="GENERATOR" content="OpenOffice.org 3.3
(Win32)">
<style type="text/css">
<!--
@page { margin: 2cm }
P { margin-bottom: 0.21cm }
-->
</style> </p>
<p style="margin-bottom: 0cm; line-height: 0.35cm;"><span
lang="en-US">[1] M. Herak, A. Zorko, D. Arčon, A.
Potočnik, M. Klanjšek, J. van Tol, A. Ozarowski, and
<br>
</span></p>
<p style="margin-bottom: 0cm; line-height: 0.35cm"><span
lang="en-US">H. Berger, Phys. Rev. B </span><span
lang="en-US"><b>84</b></span><span lang="en-US">,
184436 (2011).</span></p>
<p style="margin-bottom: 0cm; line-height: 0.35cm"
lang="en-US">[2] M. Herak et al., u pripremi.</p>
<title></title>
<meta name="GENERATOR" content="OpenOffice.org 3.3
(Win32)">
<style type="text/css">
<!--
@page { margin: 2cm }
P { margin-bottom: 0.21cm }
-->
</style>
<p class="MsoBodyText" style="MARGIN: 0cm 0cm 0pt;
LINE-HEIGHT: 10pt; TEXT-ALIGN: justify;
mso-line-height-rule: exactly"><b><span
style="FONT-SIZE: 11pt; COLOR: blue; FONT-FAMILY:
'Century Gothic'; mso-bidi-font-size: 12.0pt"><o:p></o:p></span></b></p>
</td>
</tr>
<tr>
<td style="BORDER-RIGHT: #e0dfe3; PADDING-RIGHT: 5.25pt;
BORDER-TOP: #e0dfe3; PADDING-LEFT: 5.25pt;
PADDING-BOTTOM: 5.25pt; BORDER-LEFT: #e0dfe3; WIDTH:
453.75pt; PADDING-TOP: 5.25pt; BORDER-BOTTOM: #e0dfe3;
BACKGROUND-COLOR: transparent" valign="top" width="605">
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><b><span
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Century
Gothic'; mso-bidi-font-size: 12.0pt"> <o:p></o:p></span></b></p>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><b><span
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Century
Gothic'; mso-bidi-font-size: 12.0pt">Voditelji
seminara IF-a: Vlasta Horvatić i Ivica Živković</span></b><o:p></o:p></p>
</td>
</tr>
</tbody>
</table>
</font></div>
</body>
</html>