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1 «Â³ñíèê Õàðê³âñüêîãî óí³âåðñèòåòó», ¹ 859, 2009 ñåð³ÿ ô³çè íà «ßäðà, àñòèíêè, ïîëÿ», âèï. 2 /42/ Ñòðóêòóðà è ìàãíèòíûå ñâîéñòâà ,.. 1,.. 2,.. 2, «-», 61108,.,1 2..,61004,,., 4 fedorets@univer.kharkov.ua ,., (M s ~ 74 2 / ). :,, -,, -,,. STRUCTURE AND MAGNETIC PROPERTIES OF GAMMA ACTIVATED NANOPARTICLES OF MAGNETITE N.P. Dikiy 1, E.P. Medvedeva 1, I.D. Fedorets 2, N.P. Khlapova 2, N.S. Lutsay 2 1 National Scientific Center Kharkov Institute of Physics and Technology Akademicheskaya st. 1, Kharkov, Ukraine, N.V. Karasin Kharkiv National University, Svobody sq. 4, Kharkov, Ukraine, Activation of nanoparticles of magnetite is carried out by slowing-down - radiation on high-current electronic accelerator in NSC KIPT at energy of electrons 22 MeV and a current 500 µ. The comparative analysis of component-phase structure and state of crystal structure of activated and initial nanomagnetite was carried out by X-ray diffractometry and IR spectroscopy methods. The magnetic properties of samples were investigated by magnetometric method. Radiative transformations have been analysed and it was shown that there were no essential changes in structure and properties of nanomagnetite. Activated nanoparticles of magnetite keep monophase state and crystallinity of initial state and have high level of saturation magnetization (M s ~ 74 m 2 /kg), so they predetermine possibility of their usage as a magnetically operated radiopharmpreparation. KEY WORDS: nanomagnetite, electron accelerator, gamma-activation, X-ray diffractometry, IR- spectroscopy, magnetometry, radiopharmpreparation -.. 1,.. 1,.. 2,.. 2, «-». 1,., ,,., ,., (Ms ~ 74 2/ ). :,, -,, -,,.,,,,. (Fe 3 O 4 ),,. Fe 3 O 4,
2 90 «Â³ñíèê Õàðê³âñüêîãî óí³âåðñèòåòó», ¹ 859, 2009 (,, ).,.,.,,,, [1,2]..,.,,,,..,., - [3].. [4] ( 90 Y):., [5,6], 90 Y 188 Re.., -., -. -.,, -, -,. Fe 3 O 4 Alta Aesar a Johnson Mathey Company,, Ge(Li)- 2, , 35º. - ( ~ 1,5-2 ) ~ 80. ( ) - ( ) Cu ( =1,5406 ). 1 /, Fe 3 O 4 - : Fe-O- Fe 3 O 4,, OH, NH 2. Specord-75 IR , KBr koe..1 Ge(Li) ,7, R=5c.. 1, - Fe - Cr, Mn Ni. - Fe 3 O 4
3 ñåð³ÿ ô³çè íà «ßäðà, àñòèíêè, ïîëÿ», âèï. 2 /42/ Ñòðóêòóðà è ìàãíèòíûå ñâîéñòâà... 91,. 1.,. 1, Fe 51 Cr Mn Mn 54 Mn 52 Mn Mn Ni juvl Ni Sour./R-nucl A(%) / : Cr / / / Cr(27.7D) 52Cr(83.76%)(γ,n), 53Cr(9.55%)(γ,2n), 50Cr(4.31%)(n,γ) Mn Mn(312.5D) 55Mn(100%)(γ,n) 56Mn(2.58H) 55Mn(100%)(n,γ) Fe / / / Mn(5.59D) 54Fe(5.84%)(γ,2n)52Fe(8.275H)-> 54Fe(5.84%)(γ,np) 54Mn(312.5D) 54Fe(5.84%)(n,p) 56Mn(2.58H) 56Fe(91.68%)(n,p) 57Fe(2.17%)(γ,p) 52Fe(8.28H) 54Fe(5.84%)(γ,2n) Ni / / / / Ni(38.1H) 58Ni(67.76%)(γ,n). 2 ( b) Fe 3 O 4.,. (. 2, ) 2 = 18,25; 30,20; 35,60; 43,90; 54,00; 57,90, American Standard Testing Materials (ASTM Powder Diffraction Card No ), (Fe 3 O 4 ). (. 2, b),,,, (2 = 18,25; 30,20; 35,60; 43,90; 54,00; 57,90 ),, 2, 26,00; 33,16 55,00,, ASTM Powder Diffraction Card No , - ( -Fe 2 O 3 ) ; b- Fe 3 O 4 -,
4 92 «Â³ñíèê Õàðê³âñüêîãî óí³âåðñèòåòó», ¹ 859, ( -Fe 2 O 3 )., [7], Fe 2+, Fe ( -Fe 2 O 3 )., Fe 3 O 4,, -., Fe 3 O 4 -Fe 2 O 3. (.2, b),, Fe 3 O 4. 2 = 18,25; 30,20; 35,60; 43,90; 54,00; 57,90, [8], (111), (220), (311), (400), (422) (511) Fe 3 O 4 [9].. 2, (HKL) ( L 2 ). d - [10]. 8,34,, [10-12]. 8,40 [11]., [13], : a = d H + K + L, (1), d, HKL 2. Fe 2 O , º 18,25 30,20 35,60 43,90 54,00 57,90 (HKL) (111) (220) (311) (400) (422) (511) L d, 4,86 2,95 2,52 2,06 1,69 1,61 d, 4,85 2,97 2,53 2,10 1,71 1,62 (HKL), n (H=nh, K=nk, L=nl)., [14], : L = 0,9 λ / B cosθ, (2) L,,, 2,. Fe 3 O 4 ~ 33,97., Fe 3 O 4 ( ).,, [15], d- -, Fe 3 O 4. (. 2, b),, Fe 3 O 4. -,. 3 ( a b). Fe 3 O 4 : , Fe- - - Fe 3 O 4. [16], 1 2 Fe-. Fe- - -,, [17,18],, ( )
5 ñåð³ÿ ô³çè íà «ßäðà, àñòèíêè, ïîëÿ», âèï. 2 /42/ Ñòðóêòóðà è ìàãíèòíûå ñâîéñòâà (Fe 3 O 4 ). - Fe 3 O 4; b- Fe 3 O 4 [10],., (f),, = f/m,.,., Fe 3 O 4 (. 2). 1, Fe,, 3d- Fe , ( Fe 3 O 4 ) , - -, , N 2 NO-, , (HOH) , -NO 3., -, (. 2, b),, ,. ( 1 2 ) (~10-15%). Fe 3 O 4,.,, -Fe 2 O 3. -Fe 2 O ,, [19], -., - (~5-1 ) 1 2, -Fe 2 O 3 -.,,,,,.,,, Fe 3 O 4, [20]., D (Fe 3+ Fe 2+ ),. Fe -,,,., ,.,.. (M s ) ~ / (87 emu/g),. [15] Fe 3 O 4 = 8,39 5,24 / /.,
6 94 «Â³ñíèê Õàðê³âñüêîãî óí³âåðñèòåòó», ¹ 859, 2009,, ~ 74 2 /. M s 15% M s Fe 3 O 4., -,,,, Ge(Li) , Fe d - - Fe- -, Fe 3 O 4,. 4.,. 5. M s ~ 74 2 /, 15%,. 1. Salata O.V. Application of nanoparticles in biology and medicine // Journ. Nanobiotechnology Vol. 2:3. P Pankhurst Q.A., Connoly J., Jones S.K. and Dobson J. Applications of magnetic nanoparticles in biomedicine // Journ. Phys.D: Appl. Phys Vol. 36. P Jain R. K. Delivery of molecular medicine to solid tumors: lessons from in vivo imaging of gene expression and function // Journ. of Controlled Release Vol Häfeli U.O., Sweeney S.M., Beresford B.A. and Humm J.L. Effective targeting of magnetic radioactive 90 Y-microspheres to turmor cells by an externally applied magnetic field. Preliminary in vitro and vivo results // Nucl. Med. Biol Vol. 22. P Häfeli U.O., Casillas S., Dietz D.W., Pauer G.J., Rybicki L.A. Conzone S.D. and Day D.E. Hepatic tumor radioembolization in a rat model using radioactive rhenium ( 186 Re/ 188 Re) glass microspheres // Int. Journ. Radiat. Oncol. Biol. Phys Vol. 44. P Häfeli U.O., Pauer G., Failing S. and Tapolsky G. Radiolabeling of magnetic particles with rhenium-188 for cancer therapy // Journ. Magn. Mater Vol P Tang J., Myers M., Bosnick K.A. and Brus L. E. Magnetite Fe 3 O 4 Nanocrystals: Spectroscopic observation of aqueous oxidation kinetics // Journ. Phys. B Vol P :, ,..,....:, Ma M., Zhang Yu., Wei Yu. et. al. Preparation and characterization of magnetite nanoparticles coated by amino silane // Colloids and Surfaces: Physicochem. Eng. Aspects Vol P Bocanegra-Diaz A., Mohallem Nelsy D.S. and Sinesterra R.D. Preparation of a ferrofluid using cyclodextrin and magnetite // Journ. Braz. Chem. Soc Vol. 14. P Zhang X., Zhou R., Rao W., Cheng Y., Ekoko B.G. Influence of precipitator agents NaOH and NH 4 OH on the precipitatin of Fe 3 O 4 nano-particles synthesized by electron beam irradiation // Journ. of Radioanal. and Nucl. Chem Vol P Klug H., Alexsander L. X-ray Diffraction Procedure. - New York: Wiley, p. 14. Wachtman J.B., Kalman Z.H. Characterization of Materials. Butterworth-Heinemann, Manning, Greenwich, p :, Keiser J.T., Brown C.W., Heidersbach R.H. Infrared spectra of magnetite nanoparticles // J. Electrochem, Soc Vol Farmer V.C. Infrared spectra of minerals. London, p. 18. Waldron R. D. IR spectra of Ferrits // Phys. Rev Vol. 99. P Kim Ch. Y., Jang S. and Yi S. Preparation and stabilization of iron oxide nanoparticles using polymers // Journ. Ceramic Processing Research Vol. 5. P :.4:..:,
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