MARC details
| 000 -LEADER |
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| fixed length control field |
03036ntm a2200349 i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MY-KuUP |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20260413120557.0 |
| 006 - FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS |
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t||||fr|||| 000 0 |
| 007 - PHYSICAL DESCRIPTION FIXED FIELD--GENERAL INFORMATION |
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| fixed length control field |
ta |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
260413t20252025my a|||fr|||| 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0010451 (Local) |
| Qualifying information |
Hardback |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
UMPSA |
| Language of cataloging |
eng |
| Transcribing agency |
UMPSA |
| Description conventions |
rda |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
FIST .S56 2025 r Bc. |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Wong Sing Yee, |
| Relator term |
author. |
| 245 10 - TITLE STATEMENT |
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| Title |
Influence of particle size variations on electromagnetic absorption performance in bacomn hexaferrites/carbon hybrid composites / |
| Statement of responsibility, etc. |
Wong Sing Yee |
| 264 #1 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
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| Place of production, publication, distribution, manufacture |
Kuantan, Pahang : |
| Name of producer, publisher, distributor, manufacturer |
UMPSA, |
| Date of production, publication, distribution, manufacture, or copyright notice |
2025 |
| 264 #4 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
|---|
| Date of production, publication, distribution, manufacture, or copyright notice |
© 2025 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xvii, 95 pages : |
| Other physical details |
illustrations ; |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| Content type term |
text |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| Media type term |
unmediated |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| Carrier type term |
volume |
| 347 ## - DIGITAL FILE CHARACTERISTICS |
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| Source |
rda |
| File type |
text file |
| Encoding format |
PDF |
| 500 ## - GENERAL NOTE |
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| General note |
Faculty of Industrial Sciences and Technology |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Final Year Report (Bachelor of Applied Science in Material Technology) -- Universiti Malaysia Pahang Al-Sultan Abdullah - 2025 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Include bibliographical reference |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Microwave-absorbing materials are essential for radar stealth in military security and mitigating electromagnetic wave (EM) pollution caused by the widespread use of telecommunication devices. However, insufficient synergy between magnetic and dielectric losses and impedance mismatching constrain the absorption performance. This research was devoted to investigate the effect of particle size on the EM wave absorption properties of BaCoMn-hexaferrites (BCMFO) and BCMFO/activated carbon (AC) hybrid composites. The study aimed to enhance absorption by hybridizing high magnetic and dielectric losses of BCMFO and AC in a multilayer structure to minimize impedance mismatching. BCMFO was synthesized via the ball-milling with different milling times of 4, 8 and 12 hours to achieve varying particle sizes. Their effect on structural, microstructural and magnetic properties were analyzed, while electromagnetic absorption performance of BCMFO/AC with different thicknesses was measured in X-band frequency ranges. The smallest particle size of 0.20 μm, obtained after 4 h milling, demonstrated the lowest Ms, highest permeability, magnetic loss and negative RL. Conversely, the largest particle size of 0.30 μm from 12 h milling exhibited the lowest Hc, highest permittivity, and dielectric loss. Among the samples, the 1AC/1BCMFO(4) composite with a total thickness of 2 mm achieved the best absorption performance, attaining the highest negative RL of –16.66 dB and 90% absorption (< –10 dB) over a bandwidth of 1.86 GHz. The superior performance is attributed to improved impedance matching between magnetic and dielectric losses, enhanced interface polarization and hybridization of carbon. |
| 610 20 - SUBJECT ADDED ENTRY--CORPORATE NAME |
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| Corporate name or jurisdiction name as entry element |
Faculty of Industrial Sciences and Technology |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Universities and colleges |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Theses |
| General subdivision |
Dissertations |
| 856 ## - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
https://umpir.ump.edu.my/id/eprint/45997 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Thesis |