Hlgh-resolutron emssion and excitation spectra are reported for a K2C1207 crwtal at 1.2 K, and rhc effect of mmowave saturation on these spectra is dacussed. In the 1-l 2 GHz regon resonances occur at 4.628 and 7.267 CHz, pro~ng that the em&on stems from a tripiet state no) The orzgms of the To-So a
The lowest triplet state of K2Cr2O7. Electron spin resonance in an external magnetic field at 1.2 K
โ Scribed by W.A.J.A. van der Poel; J. Herbich; J.H. van der Waals
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 719 KB
- Volume
- 103
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
โฆ Synopsis
ESR experunents on the lummescent triplet state of trrclmic KzCT~O, are reported_ For the A site D = 24.300. E = 2 324 GHz. for the B ste D = 26815. E = 3.683 GHz. From the pnnapakxis tirectlon of the ZFS tensor It follows that the excrtatron is loulized on one half of the G20~-ron.
An analyns of spm-orbit coupling m this locaked state IS gnen that accounts for the decay characteristics of the sublevels.
๐ SIMILAR VOLUMES
The zero-field spliltings and IifeGmrs of the phororxciIed IripIeI sxnzs in K2Cr207 and YVO, crys~nls hnvc been derermined by EPR enpcrimenls in zero field. The splilrings for K1Cr2\_07 agree with the spin Hamilronian used previously for describing EPR cxpcrimenw in B magnetic lisld. Those for YVO,
Spin-sublevel phosphorescence spectra of pyrimidine in benzene are reportedโข The spectra related to the in-plane spin axes consist of progressions of totally symmetric bands, whereas that of the third sublevel in addition shows strong nontotally symmetric bands. Assignments are given, and some out-o
I'reswrc of ==7 kbar apphcd to single crystals of pdramagnctic I-cClz -4Hz0 at 4.2 K and 40 kOe reduces the cffcctwc magnetic field Hcff at the Fe nucleus from 229.5 f 1 to 223.5 f 1 kOe. A decrcasc of the hgand field splitting with prcssure is indlcatcd.
Magnetic suswptibilities down to 1.2"K and 57Fe Miissbauer spectra at 42ยฐK are reported on [Fe(pten)2 OR] \* 5H20. The results are consistent with a 3Az(~z~2~~)ground state characterized by a zero-field splitting of D = 4.150 cm-' into an upper !&Ys= +l) and a lower 10) level andg = 2.80. In reasona