ÿþ<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><!-- InstanceBegin template="/Templates/NiZn-Ferrite-cores.dwt" codeOutsideHTMLIsLocked="false" --> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <!-- InstanceBeginEditable name="doctitle" --> <title>NiZn ferrite material Nickel Zinc ferrites NiZn cores NiZn ferrite core drum core THP core DR core</title> <meta name="keywords" content="NiZn ferrite material,Nickel Zinc ferrites,NiZn cores,NiZn ferrite core,drum core,THP core,DR core,P cores,inductor core,RID core,threaded NiZn core,DC converters,alarm coils,U tuning coils,oscillator coils,IFT coils," /> <meta name="description" content="NiZn ferrite material,Nickel Zinc ferrites,NiZn cores,NiZn ferrite core,drum core,THP core,DR core,P cores,inductor core,RID core,threaded NiZn core,DC converters,alarm coils,U tuning coils" /> <!-- InstanceEndEditable --> <link href="../../css/style.css" rel="stylesheet" type="text/css" media="all" /> <script src="../../css/dropDown.js" type="text/javascript"></script> <script src="../../css/CBC.js" type="text/javascript" language="javascript"></script> <link href="../../css/subpage.css" rel="stylesheet" type="text/css" media="all" /> </head> <body oncontextmenu="return false" ondragstart="return false" onselectstart="return false" onselect="document.selection.empty()" oncopy="document.selection.empty()" onbeforecopy="document.selection.empty()" onmouseup="document.selection.empty()"><noscript> <iframe scr=*> </iframe> </noscript> <div id="index"> <!-- Header Section --> <div id="header"> <div id="logo"><h1><a href="../../index.html" title="China Professional Ferrite Core Supplier">China Professional Ferrite Core Supplier</a></h1></div> <div id="right-banner"><img src="../../css/top-bg1.jpg" alt="banner1" /><img src="../../css/top-bg2.jpg" alt="banner2" /></div> <div id="top-navi"> <ul> <li><a href="../../index.html">home</a></li> <li><a href="#">products</a> <ul> <li>MnZn Ferrite cores <ol><li><a href="../MnZn/introduction.htm">Introduction</a></li> <li><a href="../MnZn/characteristics.htm">Characteristics</a></li> <li><a href="../MnZn/mnzn_power_ferrite/EER_ETD.htm">MnZn Power material</a></li> <li><a href="../MnZn/MnZn_high_permeability/ee.htm">MnZn High Permeability Material</a></li> </ol> </li> <li>NiZn Ferrite cores <ol> <li><a href="introduction.htm">Introduction</a></li> <li><a href="characteristics.htm">Characteristics</a></li> <li><a href="DR.htm">NiZn Ferrite Material</a></li> </ol> </li> <li>Metallic Powder cores <ol> <li><a href="../Metallic/introduction.htm">Introduction</a></li> <li><a href="../Metallic/characteristics.htm">Characteristics</a></li> <li><a href="../Metallic/toroidal.htm">Iron Powder Material</a></li> <li><a href="../Metallic/metallic_powder_core_1.htm">FeNi50 Material</a></li> </ol> </li> <li>Bobbin <ol> <li><a href="../bobbin/ee.htm">Products list</a></li> </ol> </li> </ul> </li> <li><a href="../../profile.htm">profile</a></li> <li><a href="../../contact.htm">contact</a></li> <li><a href="../../sitemap.htm">sitemap</a></li> <li><a href="../../catalog.htm" class="aRborder">catalog</a></li> </ul> </div> </div> <!-- Main Section --> <div id="center"> <div id="left-title"> <h2>NiZn Ferrite Cores</h2> </div> <div id="mid-title" class="bg-NiZn1"></div> <div id="right-title" class="bg-NiZn3"> <div id="title" class="bg-NiZn2"></div> </div> <div id="main"> <div id="left-navi"> <ul class="short"> <li><a href="introduction.htm">Introduction</a></li> <li><a href="characteristics.htm">Characteristics</a></li> <li><a href="DR.htm">NiZn Ferrite Material</a></li> </ul> </div> <!-- InstanceBeginEditable name="main-content" --> <div id="content" class="content-bg"> <div class="pdf"><a href="../../PDF/NiZn/characteristics.pdf">print version</a></div> <h3>Introduce of Nickel Zinc ferrites</h3> <p>Nickel zinc ferrite nanoparticles (Ni0.20Zn0.44Fe2.36O4) have been produced at room temperature, without calcination, using a reverse micelle process. Particle size is approximately 7 nm as determined by x-ray powder diffraction and transmission electron microscopy. Saturation magnetization values are lower than anticipated, particle size, and cation occupancy within the spinel lattice. Extended x-ray absorption fine structure analysis suggests that a significant amount of Zn21, which normally occupies tetrahedral sites, actually resides in octahedral coordination in a zinc-enriched outer layer of the particles. This  excess  of diamagnetic Zn can thus contribute to the overall decrease in magnetism. The invention describes a transformer core of NiZn ferrite material. Said transformer core exhibits low overall losses when it is used in a transformer. Said low losses are attained if the majority of the grains of the sintered ferrite material have a monodomain structure. This is the case if the average grain size is smaller than 2.8 microns. The average grain size of the sintered material preferably ranges of from 1.3 to 2.6 microns. The delta value is preferably less than 4 nm.</p> <h3>Advantage of NiZn ferrite material</h3> <p>Nickel Zinc ferrites are provided with Low loss, High magnetic field, Thermal shock resistance, Stress resistance, High permeability, Rotary transformers (Manufactured in HFT), additionally, Nizn ferrite material have the advantage of high resistively, high curie temperature, low temperature factor, low relative loss features.</p> <h3>NiZn Ferrite Material Characteristics</h3> <table width="92%" cellpadding="0" cellspacing="1"> <tr> <th>Characteristics \ Materals </th> <th>Unit </th> <th>R1 </th> <th>R2 </th> <th>R4C </th> <th>R6 </th> <th>R8 </th> <th>R10A </th> </tr> <tr> <td>Practical frequency </td> <td>Mhz </td> <td>10~300 </td> <td>10~120 </td> <td>0.5~60 </td> <td>0.5~30 </td> <td>0.5~20 </td> <td>0.5~15 </td> </tr> <tr> <td>Initial Permeability &mu;i </td> <td></td> <td>10&plusmn;25%</td> <td>20&plusmn;25%</td> <td>40&plusmn;25%</td> <td>60&plusmn;25%</td> <td>80&plusmn;25%</td> <td>100&plusmn;25%</td> </tr> <tr> <td>Relative temperature coefficien<br /> of initial &alpha; &mu;i rpermeability </td> <td>10<sup>-6</sup>/&#8451; </td> <td>020 </td> <td>020 </td> <td>030 </td> <td>020 </td> <td>020 </td> <td>020 </td> </tr> <tr> <td>Curie temperature Tc </td> <td>&#8451;</td> <td>400 </td> <td>400 </td> <td>300 </td> <td>300 </td> <td>300 </td> <td>300 </td> </tr> <tr> <td>Saturation magnetic flux density Bs </td> <td>mT </td> <td>210<br /> (16kA/m) </td> <td>290<br /> (23kA/m) </td> <td>290<br /> (23kA/m) </td> <td>350<br /> (27kA/m) </td> <td>300<br /> (23kA/m) </td> <td>330<br /> (26kA/m) </td> </tr> <tr> <td>Remanent flux density Br </td> <td>mT </td> <td>135 </td> <td>185 </td> <td>230 </td> <td>215 </td> <td>275 </td> <td>220 </td> </tr> <tr> <td>Coercivity Hc </td> <td>A/m </td> <td>1945 </td> <td>1570 </td> <td>597 </td> <td>597 </td> <td>716 </td> <td>200 </td> </tr> <tr> <td>Electrical resistivity &rho;</td> <td>&Omega;-m </td> <td>10<sup>7</sup> </td> <td>10<sup>6</sup></td> <td>10<sup>6</sup></td> <td>10<sup>5</sup></td> <td>10<sup>5</sup></td> <td>10<sup>5</sup></td> </tr> <tr> <td>Density d </td> <td>kg/m<sup>3</sup> </td> <td>4.4&times;10<sup>3</sup> </td> <td>4.4&times;10<sup>3</sup></td> <td>4.4&times;10<sup>3</sup></td> <td>4.4&times;10<sup>3</sup></td> <td>4.4&times;10<sup>3</sup></td> <td>4.4&times;10<sup>3</sup></td> </tr> <tr> <td>Relative loss factor Tan&delta;/ &mu;i (10kHz) </td> <td>&times;10<sup>-6</sup></td> <td>&lt;500(10MHz)<br /> &lt;1000(80MHz) </td> <td>&lt;450(10MHz)<br /> &lt;1000(120MHz) </td> <td>&lt;50(3MHz)<br /> &lt;450(60MHz) </td> <td>&lt;90(0.5MHz)<br /> &lt;280(30MHz) </td> <td>&lt;76(2MHz)<br /> &lt;350(20MHz) </td> <td>&lt;6.3(1MHz) </td> </tr> </table> <div class="terms">Notes:The values in each column are typical ones, not including special requirements of customers, it should be emphasized in contract if having any special requirement. </div> <h3>NiZn Ferrite Material Characteristics</h3> <table width="92%" cellpadding="0" cellspacing="1"> <tr> <th>Characteristics \ Materal </th> <th>Unit </th> <th>R20 </th> <th>R30 </th> <th>R50 </th> <th>R80 </th> <th>R100 </th> <th>R120 </th> <th>R150 </th> </tr> <tr> <td>Practical frequency </td> <td>Mhz </td> <td>0.3~7 </td> <td>0.1~2 </td> <td>0.1~2 </td> <td>0.005~1 </td> <td>0.05~0 .5 </td> <td>0.01~0 .5 </td> <td>0.01~0 .5 </td> </tr> <tr> <td>Initial Permeability &mu;i </td> <td></td> <td>200&plusmn;25%</td> <td>300&plusmn;25%</td> <td>500&plusmn;25%</td> <td>800&plusmn;25%</td> <td>1000&plusmn;25%</td> <td>1200&plusmn;25%</td> <td>1500&plusmn;25%</td> </tr> <tr> <td>Relative temperature coefficien<br /> of initial &alpha;&mu;ir permeability</td> <td>10<sup>-6</sup>/&#8451; </td> <td>0~20 </td> <td>0~16 </td> <td>0~10 </td> <td>0~10 </td> <td>0~5 </td> <td>0~3 </td> <td>0~3 </td> </tr> <tr> <td>Curie temperature Tc </td> <td>&#8451;</td> <td>250 </td> <td>150 </td> <td>140 </td> <td>130 </td> <td>110 </td> <td>100 </td> <td>100 </td> </tr> <tr> <td>Saturation magnetic flux density Bs </td> <td>mT </td> <td>330<br /> (26kA/m) </td> <td>330<br /> (26kA/m) </td> <td>310<br /> (24kA/m) </td> <td>300<br /> (23kA/m) </td> <td>295<br /> (23kA/m) </td> <td>290<br /> (23kA/m) </td> <td>280<br /> (22kA/m) </td> </tr> <tr> <td>Remanent flux density Br</td> <td>mT </td> <td>165 </td> <td>150 </td> <td>150 </td> <td>200 </td> <td>200 </td> <td>140 </td> <td>105 </td> </tr> <tr> <td>Coercivity Hc </td> <td>A/m </td> <td>48 </td> <td>56 </td> <td>16 </td> <td>16 </td> <td>16 </td> <td>16 </td> <td>16 </td> </tr> <tr> <td>Electrical resistivity </td> <td>&Omega;-m </td> <td>10<sup>5</sup></td> <td>10<sup>5</sup></td> <td>10<sup>5</sup></td> <td>10<sup>5</sup></td> <td>10<sup>5</sup></td> <td>10<sup>5</sup></td> <td>10<sup>5</sup></td> </tr> <tr> <td>Density d </td> <td>kg/m3 </td> <td>4.4&times;10<sup>3</sup> </td> <td>4.4&times;10<sup>3</sup> </td> <td>4.4&times;10<sup>3</sup> </td> <td>4.5&times;10<sup>3</sup> </td> <td>4.5&times;10<sup>3</sup> </td> <td>4.6&times;10<sup>3</sup> </td> <td>4.6&times;10<sup>3</sup> </td> </tr> <tr> <td>Relative loss factor Tan &delta;/ &mu;i </td> <td>&times;10<sup>-6</sup></td> <td >&lt;16(0.3MHz)<br /> &lt;350(7MHz) </td> <td>&lt;20(0.1MHz) <br /> &lt;65(2MHz) </td> <td>&lt;15(0.1MHz)<br /> &lt;70(2MHz) </td> <td>&lt;12(0.05MHz)<br /> &lt;80(1MHz) </td> <td>&lt;12(0.05MHz)<br /> &lt;70(1MHz) </td> <td>&lt;10(0.01MHz)<br /> &lt;60(0.5MHz) </td> <td>&lt;10(0.0MHz)<br /> &lt;60(0.5MHz) </td> </tr> </table> <div class="terms">Notes:The values in each column are typical ones, not including special requirements of customers, it should be emphasized in contract if having any special requirement. </div> <div class="next"><a href="characteristics2.htm">>> More Info</a></div> </div> <!-- InstanceEndEditable --> </div> </div> <!-- Footer Section --> <div id="footer"> <p><img src="../../css/copyright.jpg" /></p> <div class="clear"></div> </div> </div> <!-- Google Analytics Code --> <script src="http://www.google-analytics.com/urchin.js" type="text/javascript"> </script> <script type="text/javascript"> _uacct = "UA-1903954-3"; 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