Vol. 64, No. 5, May 2014, pp. 508∼511
New Physics: Sae Mulli, DOI: 10.3938/NPSM.64.508
Hyperfine Structure of the Paramagnetic Mn 2+ Ion in a PbWO 4 Single Crystal
T. H. Yeom ∗
Department of Laser and Optical Information Engineering, Cheongju University, Cheongju 360-764, Korea (Received 14 April 2014 : revised 22 April 2014 : accepted 22 April 2014)
The electron paramagnetic resonance (EPR) of the Mn
2+ion in the PbWO
4crystal has been investigated with an X-band spectrometer. The magnetic resonance spectra of the Mn
2+paramag- netic impurity ion were obtained in the temperature range 12 K ∼ 56 K. As the temperature was decreased, the intensity of resonance spectra increased. However, the EPR parameters of the Mn
2+ion did not change within the experimental temperature range. The Mn
2+impurity ion seems to reside in only one site, instead of two sites, in the PbWO
4crystal because only one set of EPR spectra was obtained. Namely, the Mn
2+ion substitutes for the Pb
2+ion or for one of the two W
6+ions at two magnetically-different sites. The spectroscopic splitting parameter g = 2.000 was obtained by using an effective spin Hamiltonian. The hyperfine structure of the Mn
2+ion was also obtained.
PACS numbers: 76.30.Fc, 76.30.-v
Keywords: Electron paramagnetic resonance, Mn
2+impurity ion, PbWO
4crystal, Hyperfine structure
PbWO 4 m+ s ÇX N Ë 5 8 ý Mn 2+ V ê s V R Ë T Æ X Ø8 ý ¾Q : g º
* 9 ? Ú ∗
' õ
AÅ Ò@ / < Æ § s / B N @ / < Æ Y Us $ F g& ñ Ð/ B N < Æõ , ' õ AÅ Ò 360-764
(2014¸ 4 Z 4 14{ 9 ~ Ã Î6 £ §, 2014¸ 4 Z 4 22{ 9 Ã º& ñ : r ~ Ã Î6 £ §, 2014¸ 4 Z 4 22{ 9 > F S X & ñ )
PbWO
4é ß & ñ ? /\ © $ í Ô ¦í HÓ ü t Ð ' ÷ &# Q e H Mn
2+s : r \ @ /ô Ç © $ í / B N" î z ´+ « >
`
¦ X-band Û ¼& 7 à Ô Ðp ' \ ¦ 6 x # Ã º' % i . : r ¸ # 3 0 A 12 K ∼ 56 K\ " f Mn
2+ © $ í s : r
\
@ /ô Ç © $ í / B N" î f ¨ Ã º ` ¦ % 3 % 3 . : r ¸ ? / 9y \ / B N" î f ¨ Ã º _ y © ¸ H 7 £ x % i Ü ¼
, z ´+ « > : r ¸ # 3 0 A ? /\ " f l / B N" î © Ã º H t · ú § ¦ { 9 & ñ % i . z ´+ « >\ " f % 3 É r Mn
2+s
:
r _ / B N" î f ¨ Ã º s ¸f ô Ç [ jà Ôë ß : r כ Ü ¼ Ð Ð , PbWO
4 ¸ & ñ ? /\ Mn
2+ © $ í Ô ¦í HÓ ü t` ¦ '
r & $ í © r ~ ´ M : ¸f ô Ç o ë ß u ¨ 8 ¦ [ þ t # Q H כ Ü ¼ Ð ó ø Íé ß ) a . 7 £ ¤, Mn
2+s : r É r Pb
2+s
:
r` ¦ u ¨ 8 , W
6+_ l & h Ü ¼ Ð 1 l x1 p x t · ú § É r ¿ º o × æ ô Ç o ë ß ` ¦ u ¨ 8 ô Ç . Ä »´ òÛ ¼ 2 ; x 9
Ðm î ß ` ¦ 6 x # Mn
2+s : r _ ì rF g < Æ& h ì r o g = 2.000` ¦ % 3 % 3 . ¢ ¸ô Ç Mn
2+s : r \ @ /ô Ç
íp [ j ½ ¨ ¸\ ¦ > í ß % i .
PACS numbers: 76.30.Fc, 76.30.-v
Keywords: © $ í / B N" î , Mn
2+Ô ¦í HÓ ü t s : r, PbWO
4é ß & ñ , íp [ j ½ ¨ ¸
∗