16155
The zwitterated nanoparticles were readily dispersed and stable in aqueous media in the pH range 6 - 9 but exhibited lower magnetization values than nonzwitterated materials due to amorphous content and spin canting , typical for particles of such size .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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