Investigations of phase transitions and deuteron dynamics in mixed crystals of betaine phosphate and phosphite by means of 2 H-NMR- and dielectric experiments:
Gespeichert in:
| 1. Verfasser: | |
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| Format: | Buch |
| Sprache: | Undetermined |
| Veröffentlicht: |
2000
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| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Leipzig, Univ., Diss., 2000 |
| Beschreibung: | 115 S. graph. Darst. |
Internformat
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| 245 | 1 | 0 | |a Investigations of phase transitions and deuteron dynamics in mixed crystals of betaine phosphate and phosphite by means of 2 H-NMR- and dielectric experiments |c vorgelegt von Jens Totz |
| 264 | 1 | |c 2000 | |
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| 650 | 0 | 7 | |a Betainphosphat |0 (DE-588)4325323-4 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Betainphosphit |0 (DE-588)4315155-3 |2 gnd |9 rswk-swf |
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Datensatz im Suchindex
| _version_ | 1812460973542342656 |
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TABLE OF CONTENTS
PAGE
1. INTRODUCTION AND AIM 3
2. STRUCTURE AND PROPERTIES OF BETAINE PHOSPHATE (BP) AND BETAINE
PHOSPHITE (BPI) MIXED CRYSTALS 7
3. THEORY 13
3.1 DEUTERIUM (
2H)-NMR SPECTROSCOPY 13
3.1.1 ONE-DIMENSIONAL (ID) DEUTERIUM SPECTRA 13
3.1.2
2H-NMR SPECTRA AND EFG TENSORS OF LOCAL DEUTERIUM SITES 15
3.1.3 REFLECTION OF CHEMICAL EXCHANGE PROCESSES IN
1D-2H-NMR SPECTRA 19
3.1.4 TWO-DIMENSIONAL (2D) EXCHANGE SPECTRA - 21
3.2 STRUCTURAL PHASE TRANSITIONS AND NMR EXPERIMENTS 26
3.2.1 DISTINCTION OF STRUCTURAL PHASE TRANSITIONS 26
3.2.2 DETECTION OF PHASE TRANSITIONS BY
2H-NMR 28
3.3 ONE-DIMENSIONAL SYSTEMS WITH IONIC CONDUCTIVITY 30
3.3.1 DETERMINATION OF CONDUCTIVITY BY DIELECTRIC MEASUREMENTS 30
3.3.2 RELATION BETWEEN CHEMICAL EXCHANGE AND CONDUCTIVITY
PROCESSES
3.3.3 MICROSCOPIC PICTURE OF IONIC CONDUCTIVITY 33
4. EXPERIMENTAL 35
4.1 PREPARATION OF DEUTERATED MIXED CRYSTALS OF BP AND BPI
(DBPI.XDBPIX) 35
4.2 ID- AND 2D
2H-NMR MEASUREMENTS 35
4.3 DIELECTRIC MEASUREMENTS 38
5. RESULTS AND DISCUSSION 39
5.1 CHARACTERISATION OF DBPI
XDBPIX CRYSTALS BY MEANS OF 2H-NMR 39
5.1.1 DERIVATION OF STRUCTURAL PROPERTIES FROM THE 1D
2H-NMR SPECTRA 39
5.1.2 SUPERPOSITION OF DYNAMIC PHENOMENA IN THE 2H-NMR SPECTRA 44
5.1.3 FEASIBILITY STUDY FOR 2D-2H-NMR EXCHANGE INVESTIGATIONS 4 7
5.2 STUDY OF THE ANTIFERRODISTORTIVE (AFD) PHASE TRANSITION IN MIXED
DBPI.XDBPIX CRYSTALS 49
5.2.1 DETERMINATION OF THE DEPENDENCE OF THE PHASE TRANSITION
TEMPERATURE ON THE CONCENTRATION
X
49
5.2.2 MICROSCOPIC MODEL OF THE AFD PHASE TRANSITION 52
5.2.3 CORRESPONDENCE OF MODEL AND EXPERIMENT 55
BIBLIOGRAFISCHE INFORMATIONEN
HTTP://D-NB.INFO/959405968
5.3 PROCESSES OF DEUTERON EXCHANGE IN DBPI
XDBPIX CRYSTALS 61
5.3.1 EXCHANGE KNOWLEDGE FROM ID SPECTRA 61
5.3.2 QUANTITATIVE DETERMINATION OF EXCHANGE PARAMETERS FOR
DBP
0
.
3
DBPI
0.7
63
5.3.3 EXCHANGE STUDIES FOR MIXED CRYSTALS WITH
X =
0.85 AND X = 0.15 73
5.4 CONDUCTIVITY PROCESSES IN DBP
1
.XDBPIX CRYSTALS 75
5.4.1 DETERMINATION OF DC-CONDUCTIVITY FOR DBP|.
XDBPIX 75
5.4.2 RELATION BETWEEN DC-CONDUCTIVITY AND CHEMICAL EXCHANGE
PROCESSES 83
5.4.3 CONDUCTIVITY MODEL AND CHARGE CARRIER DENSITY 85
5.5 COMPARISON BETWEEN THE RESULTS FOR THE MIXED CRYSTALS DBP|.
XDBPIX
AND THE ION-CONDUCTOR NH
4
HSE
04
91
5.5.1 ID- AND 2D
2
H-NMR STUDIES ON NH
4
HSE
04
, 92
5.5.2 DETERMINATION OF EXCHANGE PARAMETERS 94
5.5.3 CONDUCTIVITY MEASUREMENTS 96
5.5.4 MICROSCOPIC MECHANISM OF HYDROGEN EXCHANGE 97
6
. SUMMARY 99
APPENDIX:
SPHERICAL-LIKE MODEL FOR THE CONCENTRATION DEPENDENCE OF THE AFD PHASE
TRANSITION TEMPERATURE IN THE SYSTEM DBP|.XDBPIX 105
A1. SPHERICAL-LIKE MODEL 105
A2. PHASE TRANSITION TEMPERATURE OF THE ANTIFERRODISTORTIVE
STRUCTURAL PHASE TRANSITION 107
REFERENCES 111
2 |
| any_adam_object | 1 |
| author | Totz, Jens 1968- |
| author_GND | (DE-588)122194438 |
| author_facet | Totz, Jens 1968- |
| author_role | aut |
| author_sort | Totz, Jens 1968- |
| author_variant | j t jt |
| building | Verbundindex |
| bvnumber | BV013273620 |
| classification_tum | PHY 754d PHY 625d PHY 641d |
| ctrlnum | (OCoLC)632901763 (DE-599)BVBBV013273620 |
| discipline | Physik |
| format | Book |
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| genre | (DE-588)4113937-9 Hochschulschrift gnd-content |
| genre_facet | Hochschulschrift |
| id | DE-604.BV013273620 |
| illustrated | Illustrated |
| indexdate | 2024-10-09T18:11:19Z |
| institution | BVB |
| language | Undetermined |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-009048873 |
| oclc_num | 632901763 |
| open_access_boolean | |
| owner | DE-91 DE-BY-TUM DE-355 DE-BY-UBR |
| owner_facet | DE-91 DE-BY-TUM DE-355 DE-BY-UBR |
| physical | 115 S. graph. Darst. |
| publishDate | 2000 |
| publishDateSearch | 2000 |
| publishDateSort | 2000 |
| record_format | marc |
| spelling | Totz, Jens 1968- Verfasser (DE-588)122194438 aut Investigations of phase transitions and deuteron dynamics in mixed crystals of betaine phosphate and phosphite by means of 2 H-NMR- and dielectric experiments vorgelegt von Jens Totz 2000 115 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Leipzig, Univ., Diss., 2000 Zweidimensionale NMR-Spektroskopie (DE-588)4191219-6 gnd rswk-swf Deuterium-NMR-Spektroskopie (DE-588)4325480-9 gnd rswk-swf Betainphosphat (DE-588)4325323-4 gnd rswk-swf Betainphosphit (DE-588)4315155-3 gnd rswk-swf Dielektrische Eigenschaft (DE-588)4149718-1 gnd rswk-swf Mischkristall (DE-588)4170112-4 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Betainphosphat (DE-588)4325323-4 s Betainphosphit (DE-588)4315155-3 s Mischkristall (DE-588)4170112-4 s Dielektrische Eigenschaft (DE-588)4149718-1 s Deuterium-NMR-Spektroskopie (DE-588)4325480-9 s Zweidimensionale NMR-Spektroskopie (DE-588)4191219-6 s DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009048873&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Totz, Jens 1968- Investigations of phase transitions and deuteron dynamics in mixed crystals of betaine phosphate and phosphite by means of 2 H-NMR- and dielectric experiments Zweidimensionale NMR-Spektroskopie (DE-588)4191219-6 gnd Deuterium-NMR-Spektroskopie (DE-588)4325480-9 gnd Betainphosphat (DE-588)4325323-4 gnd Betainphosphit (DE-588)4315155-3 gnd Dielektrische Eigenschaft (DE-588)4149718-1 gnd Mischkristall (DE-588)4170112-4 gnd |
| subject_GND | (DE-588)4191219-6 (DE-588)4325480-9 (DE-588)4325323-4 (DE-588)4315155-3 (DE-588)4149718-1 (DE-588)4170112-4 (DE-588)4113937-9 |
| title | Investigations of phase transitions and deuteron dynamics in mixed crystals of betaine phosphate and phosphite by means of 2 H-NMR- and dielectric experiments |
| title_auth | Investigations of phase transitions and deuteron dynamics in mixed crystals of betaine phosphate and phosphite by means of 2 H-NMR- and dielectric experiments |
| title_exact_search | Investigations of phase transitions and deuteron dynamics in mixed crystals of betaine phosphate and phosphite by means of 2 H-NMR- and dielectric experiments |
| title_full | Investigations of phase transitions and deuteron dynamics in mixed crystals of betaine phosphate and phosphite by means of 2 H-NMR- and dielectric experiments vorgelegt von Jens Totz |
| title_fullStr | Investigations of phase transitions and deuteron dynamics in mixed crystals of betaine phosphate and phosphite by means of 2 H-NMR- and dielectric experiments vorgelegt von Jens Totz |
| title_full_unstemmed | Investigations of phase transitions and deuteron dynamics in mixed crystals of betaine phosphate and phosphite by means of 2 H-NMR- and dielectric experiments vorgelegt von Jens Totz |
| title_short | Investigations of phase transitions and deuteron dynamics in mixed crystals of betaine phosphate and phosphite by means of 2 H-NMR- and dielectric experiments |
| title_sort | investigations of phase transitions and deuteron dynamics in mixed crystals of betaine phosphate and phosphite by means of 2 h nmr and dielectric experiments |
| topic | Zweidimensionale NMR-Spektroskopie (DE-588)4191219-6 gnd Deuterium-NMR-Spektroskopie (DE-588)4325480-9 gnd Betainphosphat (DE-588)4325323-4 gnd Betainphosphit (DE-588)4315155-3 gnd Dielektrische Eigenschaft (DE-588)4149718-1 gnd Mischkristall (DE-588)4170112-4 gnd |
| topic_facet | Zweidimensionale NMR-Spektroskopie Deuterium-NMR-Spektroskopie Betainphosphat Betainphosphit Dielektrische Eigenschaft Mischkristall Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009048873&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT totzjens investigationsofphasetransitionsanddeuterondynamicsinmixedcrystalsofbetainephosphateandphosphitebymeansof2hnmranddielectricexperiments |