INTRODUCTION .................................................... 6
Part 1. IR - AND RAMAN INVESTIGATIONS OF CUBIC BORON NITRIDE ... 13
1.1 Raman investigations of cBN ............................... 13
1.1.1 Raman spectra of cBN single crystals of cBN
analyzed with a He-Cd laser excitation ............. 14
1.1.2 Raman spectra of cBN single crystals,
micropowders and polycrystals analyzed with an Ar
laser excitation ................................... 14
1.1.3 Changeable position of TO and LO lines in Raman
spectra of cBN ..................................... 18
1.1.4 Raman spectra of cBN influenced by Be .............. 23
1.2 IR spectra of cBN ......................................... 32
1.2.1 IR reflection of ceramic samples of cBNc(B) ........ 32
1.2.2 Texture influence on IR - spectra of
polycrystalline samples of cBN ..................... 37
1.2.3 IR reflection of single crystals of cBN and
micropowders synthesized in a catalytic system
with a nitrogen excess ............................. 40
1.2.4 IR-transmission spectra of the cBN micropowders
synthesized with nitrogen and boron excess ......... 40
1.3 Dielectric properties of ceramic samples cBNc(B) .......... 41
1.4 The curve of the phonon density of states of cubic boron
nitride obtained from luminescence ........................ 44
Part 2. LUMINESCENCE OF CBN .................................... 50
2.1 Cathodoluminescence of Annealed Cubic Boron Nitride ....... 51
2.2 Cathodoluminescence and photoluminescence of electron
irradiated cubic boron nitride ............................ 54
2.2.1 CBN irradiated with electrons of high energy
(4.5 MeV) .......................................... 54
2.2.2 Photoluminescence of cBN irradiated with
electrons of low energy (150 -300 keV). Near-
threshold creation of optical centers in electron
irradiated cubic boron nitride ..................... 57
2.2.3 RC radiation centers obtained from
a photoluminescence study of cubic boron nitride
irradiated with electrons of near-threshold
energies. Splitting of the zero phonon lines of
the centers ........................................ 65
2.3 Cathodoluminescence of cBN treated under high pressur ..... 74
2.3.1 Cathodoluminescence of poly cry tstalline cBN
treated under high pressure ........................ 74
2.3.2 Broadening of lines in cathodoluminescence
spectra of cBN ..................................... 79
2.3.3 Cathodoluminescence of cBN single crystals
treated under high pressure ranging from 3.5 to 9
GPa ................................................ 81
2.3.4 Cathodoluminescence of polycrystals, ceramic
samples and single crystals of cBN treated under
a high pressure 8 GPa and temperature ranging
from 500 to 2800 К ................................. 89
2.3.5 Cathodoluminescence of cBN single crystals
synthesized in a catalytic system with nitrogen
excess treated under a pressure 5 GPa and at
a temperature Tan = 670 - 1570 К ................... 95
2.4 Electron - vibrational structure PF in the 2.8 - 3.6 eV
range of luminescence spectra of cubic boron nitride ..... 102
2.4.1 The PF structure in cathodoluminescence spectrum
of cubic boron nitride implanted with boron
ions, electron irradiated and annealed in
vacuum ............................................ 102
2.4.2 Electron-vibrational structure PF in
photoluminescence spectra of cubic boron nitride
influenced by low energy electron irradiation
and annealing under vacuum conditions ............. 105
2.5 Impurity related cathodoluminescence and
photoluminescence spectra of cubic boron nitride ......... 114
2.5.1 Chromium related spectra in cathodoluminescence
of cubic boron nitride ............................ 114
2.5.2 Beryllium related spectra in cathodoluminescence
of cubic boron nitride ............................ 120
2.5.3 Tungsten related spectra in cathodoluminescence
and photoluminescence of cubic boron nitride ...... 128
2.5.4 Hexagonal boron nitride related spectrum in
cathodoluminescence of cubic boron nitride ........ 131
2.5.5 Pumping oil related spectra in
cathodoluminescence and photoluminescence of
cubic boron nitride, "oil center" ................. 134
2.6 Luminescence spectra of cubic boron nitride activated
by rare earth elements ................................... 138
2.6.1 Strong ultra violet luminescence from cerium-
and gadolinium-doped cubic boron nitride .......... 138
2.6.2 UV photoluminescnce of cubic boron nitride
activated by Gd and co-activated by Al and
thermobarically treated ........................... 148
2.6.3 Blue, green, and red photoluminescence of cubic
boron nitride activated by Tb, Sm, Eu and Er ...... 156
2.6.4 Red photoluminescence of cubic boron nitride
co-activated by Eu and Cr ......................... 165
2.6.5 Cubic boron nitride doped by Sm ................... 175
2.6.6 Cubic boron nitride doped by Tm ................... 180
2.6.7 Cubic boron nitride doped by Nd ................... 189
Part 3. PRACTICAL APPLICATIONS OF CBN FOR DIELECTRIC THICK
FILMS WITH HIGH THERMAL CONDUCTIVITY AND ITS
CHARACTERIZATION USING EPR METHOD ..................... 201
3.1 Dielectric thick films based on cBN micropowder .......... 203
3.2 High Thermal Conductivity Cubic Boron Nitride Thick
Films .................................................... 210
3.3 EPR analysis for cBN practical applications .............. 215
3.3.1 EPR-Study of Cubic Boron Nitride of Different
Stoichiometric Compositions ....................... 215
3.4 EPR analysis of cubic boron nitride with a different
boron content applied to characterization of thick
films of various thermal conductivities .................. 224
References .................................................... 233
Aknowledgments ................................................ 263
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