Multipurpose High-Frequency ESR Spectrometer for Condensed Matter Research

被引：13
|
作者：
Nagy, Kalman L. [1 ,2 ]
Quintavalle, Dario [1 ,2 ]
Feher, Titusz [1 ,2 ]
Janossy, Andras [1 ,2 ]
机构：
[1] Budapest Univ Technol & Econ, Dept Phys, H-1521 Budapest, Hungary
[2] Hungarian Acad Sci, Condensed Matter Phys Res Grp, H-1521 Budapest, Hungary
来源：
APPLIED MAGNETIC RESONANCE | 2011年 / 40卷 / 01期
关键词：
SPIN-RESONANCE SPECTROMETER; ELECTRON-PARAMAGNETIC-RESONANCE; OPTICAL REFLECTION BRIDGE; PULSE EPR SPECTROMETER; CONTINUOUS-WAVE; SPECTROSCOPY; GHZ; CW;
D O I：
10.1007/s00723-010-0182-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
We describe a multifrequency quasi-optical electron spin resonance (ESR) spectrometer operating in the 75-225 GHz range and optimized at 222.4 GHz for general use in condensed matter physics and chemistry. The quasi-optical bridge detects the change of millimeter wave polarization at the ESR condition. A controllable reference arm maintains a millimeter wave bias at the detector. The sensitivity of 2 x 10(10) spin/(G Hz(0.5)), measured on a dilute Mn:MgO sample in a non-resonant probe head at 222.4 GHz and 300 K, is comparable to that of commercial high-sensitive X-band spectrometers. The spectrometer is robust, easy to use and may be operated by undergraduate students. Its performance is demonstrated by examples from various fields of condensed matter physics.
引用
收藏
页码：47 / 63
页数：17
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