Associate Professor, PhD, Scientific Secretary

Acad. G. Bonchev Str., Bl. 107 Sofia 1113 Bulgaria

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  • PhD in Mineralogy and Crystallography -2006 - Central Laboratory of Mineralogy and Crystallography, Sofia. Thesis: Mineralogical features of zircon from high-grade metagranites from Ograzhden, SMM, SW Bulgaria
  • MSc in Geochemistry – 1989 - Sofia University


  • Structural defects in minerals and various materials, Vibrational spectroscopy (Raman scattering and micro-IR spectroscopy), biological apatite, metamict and disordered minerals.


Postdoctoral Fellowship (JSPS) at Yamaguchi University, Japan (11.2010-11.2012), Department of Advanced Materials Science and Engineering, Faculty of Engineering, Project title: Structural Investigation of Microporous Titanosilicates and Calcium Phosphates Nanocrystals.



DTK-0270/2009. Biomaterials for bone implants-Ca-phosphates based ceramics, cements and hybrid materials.

ТК-Х-1715/2007. Modification and modeling of physical parameters of crystals for optical storage and processing of information

TK-X-1712/07. Growth, characterization and investigation of the physical properties of new single crystals in the systems Bi-Co(Ni)-Mn(Ru)-O and La-Co(Ni)-Mn(Ru)-O and their magnetoelectrical/multiferoic behavior.

MU-38/2010.Optimization ofthe Er: YAGlaserparameters forminimal interventionin the treatment ofdental cariesin children, through experimentsin vitro.Prof.M.Rashkova(MU). Grant funding from MU- Sofia,2010.


Mineralogical Association of Canada


Bulgarian Geological Society


List of publications 2009-2014  

  1. Jegova, G., Titorenkova, R., Rashkova, M., Mihailova, B. Raman and IR reflection micro-spectroscopic study of Er: YAG laser treated permanent and deciduous human teeth. 2013. Journal of Raman Spectroscopy, 44 (11), pp. 1483-1490. Online ISSN: 1097-4555.

  2. Marinova, I.K., Ganev, V.Y., Titorenkova, R.H.. Colloidal origin of colloform-banded textures in the Paleogene low-sulfidation Khan Krum gold deposit, SE Bulgaria. 2014, Mineralium Deposita, pp. 1-26.

  3. Fujiwara K., T. Tamaki, C. Kishimori, R. Titorenkova, A. Nakatsuka, N. Nakayama. Crystal Structures of Cobalt-Exchanged Sodium GTS-type Titanosilicates and the Elution Test by Acid Solution, Transactions of the Materials Research Society of Japan Vol. 38(2013) No. 3, p.455-458.

  1. Tzvetanova Y., R. Titorenkova. Melilite in the skarns from Zvezdel-Pcheloyad ore deposit, Eastern Rhodopes, Bulgaria. Bulgarian Geological Society, National Conference with International Participation Proceeding „Geosciences 2013“, 55-56.
  2. Titorenkova R., N. Petrova, V. Kostov-Kytin, R. Nikolova, C. Kishimori, K. Fujiwara, N. Nakayama. (2012).FT-IR and Raman spectroscopic study of GTS-type titanosilicate (H, K, Na)4Ti4Si3O16 nH2O. Topics in Chemistry and Materials Science, v. 4, Advanced Micro- and mesoporous materials, eds. K. Hadjiivanov, V. Valtchev, S. Mintova, G. Vayssilov, Heron Press, ISBN 978-954-580-239-3.
  1. Ilieva R., E. Dyulgerova, O. Petrov, R. Aleksandrova and R. Titorenkova. Effects of high energy dry milling on biphase calcium phosphates. Advances. Applied Ceramics, 2012, 112 (4), pp. 219-226.

  1. Avdeev G. V., T. I. Milenov, A. V. Egorysheva, K. P. Petrov, V. M. Skorikov, R. Kh. Titorenkova, and P. M. Rafailov. Crystal Structure of Bi36MgP2O60 – δ., Russian Journal of Inorganic Chemistry, 2011, Vol. 56, No. 6, pp. 913–918.
  2. Rabadjieva D., S. Tepavitcharova, R. Gergulova; K. Sezanova, R. Titorenkova, O. Petrov, E. Dyulgerova. Mg- and Zn-modified calcium phosphates prepared by biomimetic precipitation and subsequent treatment at high temperature. 2011. Jornal Materials Science Materials in Medicine J Mater Sci: Mater Med. Volume 22, 10, 2187-2196.
  3. Milenov, T.I., Rafailov, P.M., Thomsen, C., Egorysheva, A., Titorenkova, R., Kostova, B., Skorikov, V., Raman and optical spectroscopy characteristics of Se-doped Bi12SiO20 crystals. Optical Materials 33, 2011, 1573–1577.
  1. Rabadjieva D., S. Tepavitcharova, R. Gergulova, K. Sezanova, R. Titorenkova, O. Petrov and E. Dyulgerova. Chapter title: BIOMIMETIC MODIFICATIONS OF CALCIUM ORTHOPHOSPHATE. ON BIOMIMETICS, InTech, 2011, pp. 135-162. ISBN 978-953-307-271-5.

  2. Rabadjieva D., S. Tepavitcharova, R. Gergulova, R. Titorenkova, E. Dyulgerova, O. Petrov, Biomimetic Ion-Modifications of Amorphous Calcium Phosphate For Bi-Phase Ceramics Preparation, Nanoscience&Nanotechnology, 2011, v.11, ISSN: 1313- 8995.

  3. Ilieva R., E. Dyulgerova, R. Aleksandrova, O. Petrov, R. Titorenkova, “Nanometric bi-phase calcium phosphate and vitality of cell test”, Nanoscience& Nanotechnology, 2011, v.11, ISSN: 1313- 8995.

  1. Titorenkova R., B. Gasharova, B. Mihailova and L. Konstantinov, 2010. Attenuated total reflection infrared microspectroscopy of partially metamict zircon. The Canadian Mineralogist, Vol. 48, pp. 1297-1313.
  2. Rafailov P.M, A.V. Egorysheva, T.I. Milenov, V.D. Volodin, G.V. Avdeev, R. Titorenkova, V.M. Skorikov, R. Petrova, M.M. Gospodinov. 2010. Synthesis, growth and optical spectroscopy studies of BaBiBO4 and CaBi2B2O7 crystals. Appl Phys B : Lasers and Optics 101 (1-2) , pp. 185-192.
  3. Rabadjieva D., Gergulova R., Titorenkova R., Tepavitcharova S., Dyulgerova E., Balarew Chr., Petrov O. 2010. Biomimetic transformations of amorphous calcium phosphate: kinetic and thermodynamic studies, J Mater Sci: Mater Med., 21 (9) , pp. 2501-2509. ISSN: 0957-4530 (print version); ISSN: 1573-4838 (electronic version).
  4. Milenov T. I., P. M. Rafailov, C. Thomsen, A. V. Egorysheva, R. Titorenkova, L. Yankova, M. N. Veleva, S. Dobreva, and V. M. Skorikov, (2010) RamanSpectroscopyCharacterizationofSe- DopedBi12SiO20Crystals.  AIP Conf. Proc., Vol. 1203, pp. 228-233. ISSN: 0094-243X
    E-ISSN: 1551-7616.
  5. Stoychev K., L. Konstantinov, and R. Titorenkova. Enhanced Raman Scattering from LO Phonons in Doped Semiconductors. (2010) AIP Conf. Proc. -- Vol. 1203, 2 pp. 77-282.
  6. Titorenkova R., B. Mihailova, R. Petrova, M. Gospodinov, and L. Konstantinov. (2010) Effect of Doping on the Structure and Raman Spectra of Bi4Ge3O12AIP Conf. Proc. Vol. 1203, pp. 289-293. ISSN: 0094-243X
    E-ISSN: 1551-7616
  7. Marinova I., R. Titorenkova, V. Ganev. (2012). Colloidal origin of coloform-banded textures in the low-sulfidation, sedimentary rock-hosted Aui-Ag Khan Krum (Ada Tepe) deposit, SE Bulgaria. Geologica Macedonica, 3, 245-252. ISSN: 0352-1206.
  8. Rabadjieva D., E. Vassileva, S. Tepavicharova, S. Shopova, R.Titorenkova. Crystallization of nanosized calcium phosphates in hydrogel matrix of guar gum and xanthan gum, Nanoscience and Nanotechnology, Printed by “BPS” Sofia, 10, (2010) 175-177. ISSN 1313-8995


  1. Rabadjieva D., R. Titorenkova, R.Gergulova, St. Tepavitcharova, E. Dyulgerova, Chr. Balarew, O.Petrov, Biomimetic approach for preparation of modified calcium phosphates, Nanoscience and Nanotechnology, Printed by “BPS” Sofia, 10, (2010) 169-171. ISSN: 1313-8995.
  2. Titorenkova R., D. Rabadjieva, O. Petrov, R. Gergulova, R. Ilieva, E. Dyulgerova, L. Konstantinov. (2009) Synthesis and characterization of Zn-containing calcium phosphate bioceramics, Nanoscience and Nanotechnology, Issue 9, 176-178. ISSN: 1313- 8995.


  1. Rabadjieva D., R. Titorenkova, R.Gergulova, E. Dyulgerova, Chr. Balarew. (2009) Influence of Zn on the Biomimetic Transformation of Amorphous Calcium Phosphate to Nano-Sized Apatite, Nanoscience and Nanotechnology, Issue 9, 235-238. ISSN: 1313- 8995.
  2. Milenov, T., P. M. Rafailov, M. V. Abrashev, R. P. Nikolova, R. Titorenkova, and M. M. Gospodinov. (2009) Growth and characterization of large La1-xPbxMnO3+δ (x=0.32–0.35) crystals.  Cryst. Res. Technol. 44, 1192. Online ISSN: 1521-4079.
  3. Shivachev, B. L., T. Petrov, Hitoki Yoneda, R. Titorenkova and B. Mihailova, (2009) Synthesis and non-linear optical properties of TeO2-Bi2O3-GeO2 glasses, Scripta Materialia, 61-5, 493-496. ISSN: 1359-6462.